build(deps-dev): update webpack requirement from ~4.31.0 to ~4.32.2

Updates the requirements on [webpack](https://github.com/webpack/webpack) to permit the latest version.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.31.0...v4.32.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>

packages/webpack-transpiler/package.json

@@ -39,7 +39,7 @@
     "@types/memory-fs": "~0.3.0",
     "@types/webpack": "~4.4.12",
     "raw-loader": "~2.0.0",
-    "webpack": "~4.31.0"
+    "webpack": "~4.32.2"
   },
   "peerDependencies": {
     "@stryker-mutator/core": "^2.0.0",