fix: correct group name casing in CI workflow

Signed-off-by: Nikolai Emil Damm <[email protected]>

Author: devantler

.github/workflows/ci-gitops-test.yaml

@@ -30,7 +30,7 @@ on:
 jobs:
   test:
     runs-on:
-      group: default
+      group: Default
       labels: ${{ inputs.RUNNER || 'linux-arm64' }}
     # Ignore Require Workflow runs
     if: github.repository != 'devantler-tech/reusable-workflows' && inputs.SKIP != true && github.event_name != 'merge_group'