build(deps): Update mediawiki/page-forms requirement from 5.6.2 to 5.6.3

Updates the requirements on [mediawiki/page-forms](https://github.com/wikimedia/mediawiki-extensions-PageForms) to permit the latest version.
- [Commits](wikimedia/mediawiki-extensions-PageForms@5.6.2...5.6.3)

---
updated-dependencies:
- dependency-name: mediawiki/page-forms
  dependency-type: direct:production
...

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

composer.json

@@ -34,7 +34,7 @@
 
                 "mediawiki/cirrussearch": "dev-REL1_39",
                 "mediawiki/cldr": "2023.07",
-                "mediawiki/page-forms": "5.6.2",
+                "mediawiki/page-forms": "5.6.3",
                 "mediawiki/semantic-media-wiki": "dev-master",
                 "mediawiki/semantic-extra-special-properties": "~3.0",
                 "mediawiki/semantic-result-formats": "dev-master",