Revert "updated mocha, webpack, less and related dependencies (#2786)" (#2802)

This reverts commit 7eaf4de8a720c76669301382e895b4f7e1638e24.

GitOrigin-RevId: 774275efe40f205c9c7b2e8276b83d3cb52bd3f5

services/web/package.json

@@ -123,7 +123,7 @@
     "yauzl": "^2.10.0"
   },
   "devDependencies": {
-    "@sentry/webpack-plugin": "^1.11.1",
+    "@sentry/webpack-plugin": "^1.10.0",
     "acorn": "^7.1.1",
     "acorn-walk": "^7.1.1",
     "angular-mocks": "~1.6.10",
@@ -157,15 +157,15 @@
     "file-loader": "^5.0.2",
     "glob": "^7.1.6",
     "handlebars-loader": "^1.7.1",
-    "karma": "^5.0.2",
+    "karma": "^2.0.0",
     "karma-chai-sinon": "^0.1.5",
-    "karma-chrome-launcher": "^3.1.0",
-    "karma-mocha": "^2.0.0",
+    "karma-chrome-launcher": "^2.2.0",
+    "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.2.5",
     "karma-requirejs": "^1.1.0",
     "karma-webpack": "^4.0.2",
-    "less": "^3.11.1",
-    "less-loader": "^6.0.0",
+    "less": "^2.7.3",
+    "less-loader": "^5.0.0",
     "less-plugin-autoprefix": "^2.0.0",
     "mini-css-extract-plugin": "^0.8.0",
     "mkdirp": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
@@ -175,18 +175,18 @@
     "postcss-loader": "^3.0.0",
     "prettier-eslint-cli": "^4.7.1",
     "react-testing-library": "^5.4.2",
-    "remove-files-webpack-plugin": "^1.4.1",
+    "remove-files-webpack-plugin": "^1.4.0",
     "requirejs": "^2.3.6",
     "samlp": "^3.4.1",
     "sandboxed-module": "0.2.0",
     "sinon": "^7.5.0",
     "sinon-chai": "^3.5.0",
     "sinon-mongoose": "^2.3.0",
-    "terser-webpack-plugin": "^2.3.6",
+    "terser-webpack-plugin": "^2.3.5",
     "timekeeper": "^2.2.0",
     "translations-sharelatex": "git+https://github.com/sharelatex/translations-sharelatex.git#master",
     "val-loader": "^1.1.1",
-    "webpack": "^4.43.0",
+    "webpack": "^4.42.1",
     "webpack-cli": "^3.3.11",
     "webpack-dev-server": "^3.10.3",
     "webpack-manifest-plugin": "^2.2.0",