ghactions: Skip yocto-check-layer step instead of job

Skipping the job means the publish job doesn't run and the images don't
get pushed to the container registry. Skip the step to run the script
instead

.github/workflows/build-and-test.yaml

@@ -96,8 +96,6 @@ jobs:
           ./meta-bitbake-hashserver/scripts/validate-layer-json.py
 
   yocto-check-layer:
-    # Don't run this on tag pushes
-    if: github.event_name != 'push' || ! startsWith(github.ref, 'refs/tags/')
     needs:
       - create-layer-cache
 
@@ -143,6 +141,10 @@ jobs:
             yocto-check-layers-
 
       - name: Run yocto-check-layer
+        id: run-yocto-check-layer
+        # Don't run this on tag pushes. This step is skipped as opposed to the
+        # entire job so that dependent jobs will still run
+        if: github.event_name != 'push' || ! startsWith(github.ref, 'refs/tags/')
         run: |
           . ./core/oe-init-build-env
 
@@ -159,7 +161,7 @@ jobs:
                   $MACHINE
 
       - name: Save yocto-check-layers cache
-        if: steps.restore-yocto-check-layers-cache.outputs.cache-hit != 'true'
+        if: steps.restore-yocto-check-layers-cache.outputs.cache-hit != 'true' && steps.run-yocto-check-layer.outcome == 'success'
         uses: actions/cache/save@v3
         with:
           path: |