[Composer/CI] Corrected 4.1.x-dev requirement

Author: mnocon

.github/workflows/browser-tests.yaml

@@ -13,7 +13,7 @@ jobs:
         uses: ibexa/gh-workflows/.github/workflows/browser-tests.yml@main
         with:
             project-edition: 'oss'
-            project-version: '^4.1.x-dev'
+            project-version: '4.1.x-dev'
             test-suite:  '--mode=standard --profile=core --tags=~@broken'
         secrets:
             SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}