ensure correct version of vscode-languageserver-protocol resolved

Between MINOR version of vscode-languageserver-protocol, the version of
vscode-jsonrpc that it depends on changed in **MAJOR** version.

Thus, this PR try to ensure the user of this package use compatible
version of vscode-languageserver-protocol and vscode-jsonrpc.

I think this will fixes graphql#2230

packages/graphql-language-service-server/package.json

@@ -44,6 +44,8 @@
     "nullthrows": "^1.0.0",
     "vscode-jsonrpc": "^5.0.1",
     "vscode-languageserver": "^6.1.1",
+    "vscode-languageserver-protocol": "~3.15.3",
+    "vscode-languageserver-types": "~3.15.1",
     "fast-glob": "^3.2.7",
     "vscode-uri": "^3.0.2",
     "glob": "^7.2.0",

yarn.lock

@@ -19328,7 +19328,7 @@ vscode-languageserver-protocol@3.14.1:
     vscode-jsonrpc "^4.0.0"
     vscode-languageserver-types "3.14.0"
 
-vscode-languageserver-protocol@^3.15.3:
+vscode-languageserver-protocol@^3.15.3, vscode-languageserver-protocol@~3.15.3:
   version "3.15.3"
   resolved "https://registry.yarnpkg.com/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.15.3.tgz#3fa9a0702d742cf7883cb6182a6212fcd0a1d8bb"
   integrity sha512-zrMuwHOAQRhjDSnflWdJG+O2ztMWss8GqUUB8dXLR/FPenwkiBNkMIJJYfSN6sgskvsF0rHAoBowNQfbyZnnvw==
@@ -19341,7 +19341,7 @@ vscode-languageserver-types@3.14.0:
   resolved "https://registry.yarnpkg.com/vscode-languageserver-types/-/vscode-languageserver-types-3.14.0.tgz#d3b5952246d30e5241592b6dde8280e03942e743"
   integrity sha512-lTmS6AlAlMHOvPQemVwo3CezxBp0sNB95KNPkqp3Nxd5VFEnuG1ByM0zlRWos0zjO3ZWtkvhal0COgiV1xIA4A==
 
-vscode-languageserver-types@3.15.1, vscode-languageserver-types@^3.15.1:
+vscode-languageserver-types@3.15.1, vscode-languageserver-types@^3.15.1, vscode-languageserver-types@~3.15.1:
   version "3.15.1"
   resolved "https://registry.yarnpkg.com/vscode-languageserver-types/-/vscode-languageserver-types-3.15.1.tgz#17be71d78d2f6236d414f0001ce1ef4d23e6b6de"
   integrity sha512-+a9MPUQrNGRrGU630OGbYVQ+11iOIovjCkqxajPa9w57Sd5ruK8WQNsslzpa0x/QJqC8kRc2DUxWjIFwoNm4ZQ==