Bump webpack from 3.11.0 to 5.94.0 in /web_src

Bumps [webpack](https://github.com/webpack/webpack) from 3.11.0 to 5.94.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v3.11.0...v5.94.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
...

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

web_src/package.json

@@ -55,7 +55,7 @@
     "vue-router": "3.0.1",
     "vue-template-compiler": "2.5.16",
     "vuex": "3.0.1",
-    "webpack": "3.11.0",
+    "webpack": "5.94.0",
     "webpack-dev-server": "2.11.2"
   }
 }