chore: use stable yarn installation

.yarnrc

@@ -3,4 +3,4 @@
 
 
 lastUpdateCheck 1576854265612
-yarn-path ".yarn/releases/yarn-sources.cjs"
+yarn-path ".yarn/releases/yarn-2.3.1.cjs"

.yarnrc.yml

@@ -6,4 +6,4 @@ plugins:
   - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
     spec: '@yarnpkg/plugin-interactive-tools'
 
-yarnPath: .yarn/releases/yarn-sources.cjs
+yarnPath: .yarn/releases/yarn-2.3.1.cjs

e2e/async-regenerator/yarn.lock

@@ -3,7 +3,7 @@
 
 __metadata:
   version: 4
-  cacheKey: 6
+  cacheKey: 7
 
 "@babel/code-frame@npm:^7.10.4":
   version: 7.10.4
@@ -15,17 +15,17 @@ __metadata:
   linkType: hard
 
 "@babel/core@npm:^7.2.2":
-  version: 7.11.1
-  resolution: "@babel/core@npm:7.11.1"
+  version: 7.11.6
+  resolution: "@babel/core@npm:7.11.6"
   dependencies:
     "@babel/code-frame": ^7.10.4
-    "@babel/generator": ^7.11.0
+    "@babel/generator": ^7.11.6
     "@babel/helper-module-transforms": ^7.11.0
     "@babel/helpers": ^7.10.4
-    "@babel/parser": ^7.11.1
+    "@babel/parser": ^7.11.5
     "@babel/template": ^7.10.4
-    "@babel/traverse": ^7.11.0
-    "@babel/types": ^7.11.0
+    "@babel/traverse": ^7.11.5
+    "@babel/types": ^7.11.5
     convert-source-map: ^1.7.0
     debug: ^4.1.0
     gensync: ^1.0.0-beta.1
@@ -34,18 +34,18 @@ __metadata:
     resolve: ^1.3.2
     semver: ^5.4.1
     source-map: ^0.5.0
-  checksum: c6bb33b1f7eb803de5832342841ed615f0152e333efa601bf18460c8070bfd0e77cea83010a18a409bf8886096ec57397dd8bf388bc4d85f1337dc2bc6e3f7ef
+  checksum: ad61c22807c904247ae61f11d176b33b3e44f0f2ca3b8d2b31e781ebd558db3381291f5a8a6a3acc28f5c1d6fdbb2b3ad29ca73b4d656d128a406e641b2e985a
   languageName: node
   linkType: hard
 
-"@babel/generator@npm:^7.11.0":
-  version: 7.11.0
-  resolution: "@babel/generator@npm:7.11.0"
+"@babel/generator@npm:^7.11.5, @babel/generator@npm:^7.11.6":
+  version: 7.11.6
+  resolution: "@babel/generator@npm:7.11.6"
   dependencies:
-    "@babel/types": ^7.11.0
+    "@babel/types": ^7.11.5
     jsesc: ^2.5.1
     source-map: ^0.5.0
-  checksum: aec10e0792f506b88b0abf859d7a76d7d4a8e9a4c3865f13ce9c2fc6d67234e205859c20f8aef633f2b6a23acc7b8af1d70d77ad186b3d0af155ab9252e13b10
+  checksum: 734bd60e018deaf7712c111bb5092d0382d3c217399569f1137f0100f672bcc1a086ae3a34efa0d604951ba9070f9bf554a4690c6bfe39123b05b89a4444e9c7
   languageName: node
   linkType: hard
 
@@ -178,12 +178,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/parser@npm:^7.10.4, @babel/parser@npm:^7.11.0, @babel/parser@npm:^7.11.1":
-  version: 7.11.2
-  resolution: "@babel/parser@npm:7.11.2"
+"@babel/parser@npm:^7.10.4, @babel/parser@npm:^7.11.5":
+  version: 7.11.5
+  resolution: "@babel/parser@npm:7.11.5"
   bin:
     parser: ./bin/babel-parser.js
-  checksum: 1de840088600846f90477ec809120aec5cf6a0bac1d5b404154c91345c2b0475f1549951cac695739788002085cd2243f6cdb94e30754f8dc4eee10ccc2ebd0d
+  checksum: ef2874e4d27eaa86777680505e57a7b36549c9602c682372d8b7c6234dff84cb8d03bdce65002a3e98921d83233b5af451d6c9dd9c681232ebe4c4ee9f41318e
   languageName: node
   linkType: hard
 
@@ -199,26 +199,26 @@ __metadata:
   linkType: hard
 
 "@babel/plugin-transform-runtime@npm:^7.2.0":
-  version: 7.11.0
-  resolution: "@babel/plugin-transform-runtime@npm:7.11.0"
+  version: 7.11.5
+  resolution: "@babel/plugin-transform-runtime@npm:7.11.5"
   dependencies:
     "@babel/helper-module-imports": ^7.10.4
     "@babel/helper-plugin-utils": ^7.10.4
     resolve: ^1.8.1
     semver: ^5.5.1
   peerDependencies:
     "@babel/core": ^7.0.0-0
-  checksum: fc327b4f15366b821165cd0aec18688fbb596c056d5316190d51264e8ecb7a0a7d53c7e204709148de76dd07bf4556314ccf4bf33a1515d494e52ddf9992b67d
+  checksum: 68562beb4c48907e7d16883b07e01edfb75606f0a48a1629104cf985876421e294f70e289fb4836f2993e5130df4a91ac4375a08a23a84f39c9269e5dd91169d
   languageName: node
   linkType: hard
 
 "@babel/polyfill@npm:^7.2.5":
-  version: 7.10.4
-  resolution: "@babel/polyfill@npm:7.10.4"
+  version: 7.11.5
+  resolution: "@babel/polyfill@npm:7.11.5"
   dependencies:
     core-js: ^2.6.5
     regenerator-runtime: ^0.13.4
-  checksum: 54124d459b8dec5b721f0548830e882a733f347002c11764d2fbabc61a3f0307651fdf91338318311124a5d16c580a14bb21bb0805c0796030cbc61421225733
+  checksum: a28837a580dbe6a69f8435dbc16b403bfcec25a1d0a1b6478ceadbba3ea0755a586c2ebf46a6dccd57c65dd99b5afcfcfe8fe1d5e418d58050e57a0838b818c3
   languageName: node
   linkType: hard
 
@@ -242,31 +242,31 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@babel/traverse@npm:^7.10.4, @babel/traverse@npm:^7.11.0":
-  version: 7.11.0
-  resolution: "@babel/traverse@npm:7.11.0"
+"@babel/traverse@npm:^7.10.4, @babel/traverse@npm:^7.11.5":
+  version: 7.11.5
+  resolution: "@babel/traverse@npm:7.11.5"
   dependencies:
     "@babel/code-frame": ^7.10.4
-    "@babel/generator": ^7.11.0
+    "@babel/generator": ^7.11.5
     "@babel/helper-function-name": ^7.10.4
     "@babel/helper-split-export-declaration": ^7.11.0
-    "@babel/parser": ^7.11.0
-    "@babel/types": ^7.11.0
+    "@babel/parser": ^7.11.5
+    "@babel/types": ^7.11.5
     debug: ^4.1.0
     globals: ^11.1.0
     lodash: ^4.17.19
-  checksum: 81e4bb3020f18474d873be18c1ff56816c9de1ed38bffb933976b04904c626d2fa9a7c621658360e38c0b125175cc04f4946f19c10f65941632d17fdc4d399dc
+  checksum: 206010caeed881da55cf0e76f1c8688af072eba8dd38aa94b01fc04ab7b9ca2007b5fbc566d478555e78ae0780f399bdac1434c9ee6ea3ac2a452832fa4cab02
   languageName: node
   linkType: hard
 
-"@babel/types@npm:^7.10.4, @babel/types@npm:^7.11.0":
-  version: 7.11.0
-  resolution: "@babel/types@npm:7.11.0"
+"@babel/types@npm:^7.10.4, @babel/types@npm:^7.11.0, @babel/types@npm:^7.11.5, @babel/types@npm:^7.8.3":
+  version: 7.11.5
+  resolution: "@babel/types@npm:7.11.5"
   dependencies:
     "@babel/helper-validator-identifier": ^7.10.4
     lodash: ^4.17.19
     to-fast-properties: ^2.0.0
-  checksum: 46e2fcd49d1c6d3261fcc3e88906fa39661a193365325ca94b9b1d59f949cef8546e3aba3e13a122b1bf2a493120ad00c06533ae0c428ad60ce81ee2a2649964
+  checksum: a1515b3ed19a8499f1f27d2c90537803b3e77f6d100ef1c327c86f85817ad2d915a61ae777eaacd9d955999db4ea68d6bb3b5933e0611d3d18a6ffc95430f44a
   languageName: node
   linkType: hard
 
@@ -323,14 +323,14 @@ __metadata:
   linkType: hard
 
 "debug@npm:^4.1.0":
-  version: 4.2.0
-  resolution: "debug@npm:4.2.0"
+  version: 4.3.0
+  resolution: "debug@npm:4.3.0"
   dependencies:
     ms: 2.1.2
   peerDependenciesMeta:
     supports-color:
       optional: true
-  checksum: dcfb8ede26b4d899628a75806923ab9ad29daae7db0f6f1ca6227b660693ae0ca085c7f87261793abe0832ad56aff2afc33f907c6b5dc96a41fc208771feb465
+  checksum: 847d2760d1493cfaef53fb67d8943c6afaba30472d7527450c19919d230dde04f2275dd8dd5c2874c7103787c190d3b5d3dbc2ee7596a12d853a2ce35c4b8b1b
   languageName: node
   linkType: hard
 
@@ -390,9 +390,9 @@ __metadata:
   linkType: hard
 
 "lodash@npm:^4.17.19":
-  version: 4.17.19
-  resolution: "lodash@npm:4.17.19"
-  checksum: ff2b7a95f0129dba9101e346d44e0eda0f159d76bbbf23721eec1969b87a32bde3de0cfef0733218c64620e9be08040a973278d46a686540233b356115f3527c
+  version: 4.17.20
+  resolution: "lodash@npm:4.17.20"
+  checksum: c62101d2500c383b5f174a7e9e6fe8098149ddd6e9ccfa85f36d4789446195f5c4afd3cfba433026bcaf3da271256566b04a2bf2618e5a39f6e67f8c12030cb6
   languageName: node
   linkType: hard