Bump pusher-js from 7.3.0 to 7.4.0

Bumps [pusher-js](https://github.com/pusher/pusher-js) from 7.3.0 to 7.4.0.
- [Release notes](https://github.com/pusher/pusher-js/releases)
- [Changelog](https://github.com/pusher/pusher-js/blob/master/CHANGELOG.md)
- [Commits](pusher/pusher-js@v7.3.0...v7.4.0)

---
updated-dependencies:
- dependency-name: pusher-js
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "postcss-scss": "^4.0.4",
     "postcss-simple-vars": "^7.0.0",
     "postcss-url": "^10.1.3",
-    "pusher-js": "^7.3.0",
+    "pusher-js": "^7.4.0",
     "resolve-url-loader": "^5.0.0",
     "sass": "^1.55.0",
     "sass-loader": "^13.0.2",