Add git fetch

.github/workflows/budibase_ci.yml

@@ -96,6 +96,7 @@ jobs:
       - name: Check submodule
         run: |
           cd packages/pro
+          git fetch
           echo $(git log -n 1 --pretty=format:%H)
           if ! git branch --contains $(git log -n 1 --pretty=format:%H) | grep -q chore/pro_as_submodule"; then
             echo "Current commit is not part of main branch"