chore(deps-dev): bump webpack in /extensions/realtime/js

Bumps [webpack](https://github.com/webpack/webpack) from 5.101.0 to 5.104.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Changelog](https://github.com/webpack/webpack/blob/main/CHANGELOG.md)
- [Commits](webpack/webpack@v5.101.0...v5.104.1)

---
updated-dependencies:
- dependency-name: webpack
  dependency-version: 5.104.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

extensions/realtime/js/package.json

@@ -23,7 +23,7 @@
         "prettier": "^3.2.2",
         "@types/mithril": "^2.0.8",
         "flarum-webpack-config": "^3.0.0",
-        "webpack": "^5.76.0",
+        "webpack": "^5.104.1",
         "webpack-cli": "^4.9.1",
         "@flarum/prettier-config": "^1.0.0",
         "flarum-tsconfig": "^2.0.0",

extensions/realtime/js/yarn.lock

@@ -2532,7 +2532,7 @@ schema-utils@^3.0.0:
     ajv "^6.12.5"
     ajv-keywords "^3.5.2"
 
-schema-utils@^4.0.0, schema-utils@^4.3.2:
+schema-utils@^4.0.0, schema-utils@^4.3.0, schema-utils@^4.3.2:
   version "4.3.2"
   resolved "https://registry.npmjs.org/schema-utils/-/schema-utils-4.3.2.tgz"
   integrity sha512-Gn/JaSk/Mt9gYubxTtSn/QCV4em9mpAPiR1rqy/Ocu19u/G9J5WWdNoUT4SiV6mFC3y6cxyFcFwdzPM3FgxGAQ==
@@ -2542,16 +2542,6 @@ schema-utils@^4.0.0, schema-utils@^4.3.2:
     ajv-formats "^2.1.1"
     ajv-keywords "^5.1.0"
 
-schema-utils@^4.3.0:
-  version "4.3.0"
-  resolved "https://registry.npmjs.org/schema-utils/-/schema-utils-4.3.0.tgz"
-  integrity sha512-Gf9qqc58SpCA/xdziiHz35F4GNIWYWZrEshUc/G/r5BnLph6xpKuLeoJoQuj5WfBIx/eQLf+hmVPYHaxJu7V2g==
-  dependencies:
-    "@types/json-schema" "^7.0.9"
-    ajv "^8.9.0"
-    ajv-formats "^2.1.1"
-    ajv-keywords "^5.1.0"
-
 semantic-ui-react@^0.88.2:
   version "0.88.2"
   resolved "https://registry.npmjs.org/semantic-ui-react/-/semantic-ui-react-0.88.2.tgz"