use github output

Author: dminnear-rh

.github/workflows/ci-pipeline.yaml

@@ -56,12 +56,12 @@ jobs:
     steps:
       - id: check-mssql
         env:
-          MSSQL_VECTOR_REGISTRY: ${{ secrets.MSSQL_VECTOR_REGISTRY }}
+          REGISTRY: ${{ secrets.MSSQL_VECTOR_REGISTRY }}
         run: |
-          if [[ -n "$MSSQL_VECTOR_REGISTRY" ]]; then
-            echo "::set-output name=defined::true"
+          if [[ -n "$REGISTRY" ]]; then
+            echo "defined=true" >> "$GITHUB_OUTPUT"
           else
-            echo "::set-output name=defined::false"
+            echo "defined=false" >> "$GITHUB_OUTPUT"
           fi
 
   test: