DevEnv: update frontend dependencies - webpack (grafana#22144)

* DevEnv: updates webpack 4.29.6 -> 4.41.5

* DevEnv: updates webpack-cli 3.2.3 -> 3.3.10

* DevEnv: updates webpack-dev-server 3.2.1 -> 3.10.3

* DevEnv: updates terser-webpack-plugin 1.2.3 -> 2.3.4

* DevEnv: updates webpack-bundle-analyzer 3.3.2 -> 3.6.0

* DevEnv updates webpack-merge 4.2.1 -> 4.2.2

* DevEnv: updates clean-webpack-plugin 2.0.0 -> 3.0.0

* DevEnv: updates file-loader 3.0.1 -> 5.0.2

* DevEnv: updates css-loader 2.1.1 -> 3.4.2

* DevEnv: updates sass-loader 7.1.0 -> 8.0.2

* DevEnv: updates style-loader 0.23.1 -> 1.1.3

* DevEnv: updates fork-ts-checker-webpack-plugin 1.0.0 -> 4.0.3

* DevEnv: updates optimize-css-assets-webpack-plugin 5.0.1 -> 5.0.3

* DevEnv: updates mini-css-extract-plugin 0.5.0 -> 0.9.0

* DevEnv: updates @cypress/webpack-preprocessor 4.1.1 -> 4.1.3 in grafana-e2e package

* DevEnv: updates @types/webpack 4.4.34 -> 4.41.7 in grafana-toolkit package

* DevEnv: updates copy-webpack-plugin 5.0.3 -> 5.1.1 in grafana-toolkit package

* DevEnv: updates terser-webpack-plugin 1.3.0 -> 2.3.4 in grafana-toolkit package

* DevEnv: updates webpack 4.35.0 -> 4.41.5 in grafana-toolkit package

package.json

@@ -67,8 +67,8 @@
     "babel-jest": "24.8.0",
     "babel-loader": "8.0.6",
     "babel-plugin-angularjs-annotate": "0.10.0",
-    "clean-webpack-plugin": "2.0.0",
-    "css-loader": "2.1.1",
+    "clean-webpack-plugin": "3.0.0",
+    "css-loader": "3.4.2",
     "enzyme": "3.11.0",
     "enzyme-adapter-react-16": "1.15.2",
     "enzyme-to-json": "3.4.4",
@@ -83,8 +83,8 @@
     "expect-puppeteer": "4.4.0",
     "expect.js": "0.3.1",
     "expose-loader": "0.7.5",
-    "file-loader": "3.0.1",
-    "fork-ts-checker-webpack-plugin": "1.0.0",
+    "file-loader": "5.0.2",
+    "fork-ts-checker-webpack-plugin": "4.0.3",
     "gaze": "1.1.3",
     "glob": "7.1.3",
     "grunt": "1.0.4",
@@ -110,15 +110,15 @@
     "lerna": "^3.15.0",
     "lint-staged": "8.1.5",
     "load-grunt-tasks": "5.1.0",
-    "mini-css-extract-plugin": "0.5.0",
+    "mini-css-extract-plugin": "0.9.0",
     "mocha": "7.0.1",
     "module-alias": "2.2.0",
     "monaco-editor": "0.15.6",
     "mutationobserver-shim": "0.3.3",
     "ngtemplate-loader": "2.0.1",
     "node-sass": "4.13.1",
     "npm": "6.13.4",
-    "optimize-css-assets-webpack-plugin": "5.0.1",
+    "optimize-css-assets-webpack-plugin": "5.0.3",
     "phantomjs-prebuilt": "2.1.16",
     "pixelmatch": "4.0.2",
     "pngjs": "3.4.0",
@@ -134,20 +134,20 @@
     "rimraf": "2.6.3",
     "rxjs-spy": "^7.5.1",
     "sass-lint": "1.12.1",
-    "sass-loader": "7.1.0",
+    "sass-loader": "8.0.2",
     "sinon": "1.17.6",
-    "style-loader": "0.23.1",
+    "style-loader": "1.1.3",
     "terser-webpack-plugin": "2.3.5",
     "ts-jest": "24.1.0",
     "ts-node": "8.6.2",
     "tslib": "1.10.0",
     "typescript": "3.7.2",
-    "webpack": "4.29.6",
-    "webpack-bundle-analyzer": "3.3.2",
+    "webpack": "4.41.5",
+    "webpack-bundle-analyzer": "3.6.0",
     "webpack-cleanup-plugin": "0.5.1",
-    "webpack-cli": "3.2.3",
-    "webpack-dev-server": "3.2.1",
-    "webpack-merge": "4.2.1",
+    "webpack-cli": "3.3.10",
+    "webpack-dev-server": "3.10.3",
+    "webpack-merge": "4.2.2",
     "zone.js": "0.7.8"
   },
   "scripts": {

packages/grafana-e2e/package.json

@@ -30,6 +30,8 @@
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
+    "@cypress/webpack-preprocessor": "4.1.3",
+    "@grafana/tsconfig": "^1.0.0-rc1",
     "@rollup/plugin-commonjs": "11.0.2",
     "@rollup/plugin-node-resolve": "7.1.1",
     "@types/node": "13.7.7",

packages/grafana-toolkit/package.json

@@ -47,7 +47,7 @@
     "@types/rimraf": "^2.0.3",
     "@types/semver": "^6.0.0",
     "@types/tmp": "^0.1.0",
-    "@types/webpack": "4.4.34",
+    "@types/webpack": "4.41.7",
     "@typescript-eslint/eslint-plugin": "2.19.2",
     "@typescript-eslint/parser": "2.19.2",
     "axios": "0.19.0",
@@ -58,7 +58,7 @@
     "command-exists": "^1.2.8",
     "commander": "^2.20.0",
     "concurrently": "4.1.0",
-    "copy-webpack-plugin": "5.0.3",
+    "copy-webpack-plugin": "5.1.1",
     "css-loader": "^3.0.0",
     "eslint": "6.7.2",
     "eslint-config-prettier": "6.7.0",
@@ -100,14 +100,14 @@
     "semver": "^6.1.1",
     "simple-git": "^1.112.0",
     "style-loader": "^0.23.1",
-    "terser-webpack-plugin": "^1.3.0",
+    "terser-webpack-plugin": "^2.3.4",
     "ts-jest": "24.1.0",
     "ts-loader": "6.2.1",
     "ts-node": "8.5.0",
     "tslib": "1.10.0",
     "typescript": "3.7.2",
     "url-loader": "^2.0.1",
-    "webpack": "4.35.0"
+    "webpack": "4.41.5"
   },
   "_moduleAliases": {
     "puppeteer": "node_modules/puppeteer-core"