Bump webpack from 3.12.0 to 5.90.3

Bumps [webpack](https://github.com/webpack/webpack) from 3.12.0 to 5.90.3.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v3.12.0...v5.90.3)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -17,7 +17,7 @@
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-stage-3": "^6.24.1",
     "serverless-webpack": "^5.13.0",
-    "webpack": "^3.6.0",
+    "webpack": "^5.90.3",
     "webpack-node-externals": "^3.0.0"
   },
   "dependencies": {