use env files to share state between jobs

set-output is deprecated

.github/workflows/update-weaviate-server.yml

@@ -33,14 +33,15 @@ jobs:
         git config --global user.name '${{ github.actor }}'
         git config --global user.email '${{ github.actor }}@users.noreply.github.com'
         git add tests/docker-compose.yml
-        git diff-index --quiet HEAD && echo "::set-output name=changed::false" || (
-          echo "::set-output name=changed::true"
+        git diff-index --quiet HEAD && echo "CHANGED=false" >> $GITHUB_ENV || (
+          echo "CHANGED=true" >> $GITHUB_ENV
           git checkout -b ${{ env.SOURCE_BRANCH_NAME }} && 
           git commit -m "Update Weaviate version in tests/docker-compose.yml" && 
           git push --set-upstream origin ${{ env.SOURCE_BRANCH_NAME }}
         )
+
     - name: Create Pull Request
-      if: steps.commit.outputs.changed == 'true'
+      if: ${{ env.CHANGED == 'true' }}
       uses: actions/github-script@v7
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}