Bump webpack from 5.74.0 to 5.76.0 in /webapp/channels

Bumps [webpack](https://github.com/webpack/webpack) from 5.74.0 to 5.76.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.74.0...v5.76.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

webapp/channels/package.json

@@ -207,7 +207,7 @@
     "stylelint-config-standard": "22.0.0",
     "stylelint-order": "4.1.0",
     "stylelint-scss": "3.19.0",
-    "webpack": "5.74.0",
+    "webpack": "5.76.0",
     "webpack-bundle-analyzer": "4.7.0",
     "webpack-cli": "4.10.0",
     "webpack-dev-server": "4.11.1",