fix: only run publish_canary_version on master

Author: JamesHenry

Diff for: .github/workflows/ci.yml

@@ -144,7 +144,7 @@ jobs:
     name: Publish the latest code as a canary version
     runs-on: ubuntu-latest
     needs: [primary_code_validation_and_tests, unit_tests_on_other_node_versions, integration_tests]
-    # if: github.ref == 'refs/head/master'
+    if: github.ref == 'refs/heads/master'
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ env.PRIMARY_NODE_VERSION }}