Update GitHub Actions dependencies

- Update ramsey/composer-install from v2 to v3
- Update dependabot/fetch-metadata from v1.6.0 to v2.2.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: vlados

.github/workflows/dependabot-auto-merge.yml

@@ -13,7 +13,7 @@ jobs:
 
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.6.0
+        uses: dependabot/fetch-metadata@v2.2.0
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
 

.github/workflows/phpstan.yml

@@ -20,7 +20,7 @@ jobs:
           coverage: none
 
       - name: Install composer dependencies
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v3
 
       - name: Run PHPStan
         run: ./vendor/bin/phpstan --error-format=github