chore(deps): update devdependency eslint-loader to v4 (#522)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -61,7 +61,7 @@
     "conventional-changelog-cli": "2.0.31",
     "cross-env": "7.0.2",
     "eslint": "6.8.0",
-    "eslint-loader": "3.0.4",
+    "eslint-loader": "4.0.0",
     "eslint-plugin-jest": "23.8.2",
     "eslint-plugin-vue": "6.2.2",
     "glob-promise": "3.4.0",

yarn.lock

@@ -7149,14 +7149,14 @@ eslint-import-resolver-node@^0.3.2:
     debug "^2.6.9"
     resolve "^1.13.1"
 
-eslint-loader@3.0.4:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/eslint-loader/-/eslint-loader-3.0.4.tgz#4329482877e381c91460a055bcd08d3855b9922d"
-  integrity sha512-I496aBd+Hi23Y0Cx+sKvw+VwlJre4ScIRlkrvTO6Scq68X/UXbN6F3lAhN8b0Zv8atAyprkyrA42K5QBJtCyaw==
+eslint-loader@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-loader/-/eslint-loader-4.0.0.tgz#ab096ce9168fa167e4159afff66692c173fc7b79"
+  integrity sha512-QoaFRdh3oXt5i2uonSjO8dDnncsG05w7qvA7yYMvGDne8zAEk9R+R1rsfunp3OKVdO5mAJelf1x2Z1kYp664kA==
   dependencies:
-    fs-extra "^8.1.0"
+    fs-extra "^9.0.0"
     loader-fs-cache "^1.0.3"
-    loader-utils "^1.2.3"
+    loader-utils "^2.0.0"
     object-hash "^2.0.3"
     schema-utils "^2.6.5"