infra: formatting + debug in check changes step

.gitea/workflows/gentoo-utils.yml

@@ -11,8 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      -
-        name: Checkout repo
+      - name: Checkout repo
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
@@ -26,8 +25,8 @@ jobs:
           else
             echo changes_detected=false >> $GITEA_OUTPUT
           fi
-      -
-        name: Set up Docker buildx
+          cat $GITEA_OUTPUT
+      - name: Set up Docker buildx
         if: steps.image-changes.outputs.changes_detected == 'true'
         uses: docker/setup-buildx-action@v3