Add bc check to ci

Author: jaapio

.github/workflows/push.yml

@@ -177,11 +177,11 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-    bc_check:
-      name: BC Check
-      runs-on: ubuntu-latest
-      needs: [setup, phpunit]
-      steps:
-        - uses: actions/checkout@master
-        - name: BC Check
-          uses: docker://nyholm/roave-bc-check-ga
+  bc_check:
+    name: BC Check
+    runs-on: ubuntu-latest
+    needs: [setup, phpunit]
+    steps:
+      - uses: actions/checkout@master
+      - name: BC Check
+        uses: docker://nyholm/roave-bc-check-ga