Merge pull request #970 from eclipse-tractusx/ci/fix-helm-release

ci(workflows): fix typo in helm chart release script

.github/workflows/helm-chart-release.yaml

@@ -43,7 +43,7 @@ jobs:
           CHART_VERSION=$(grep 'version:' ./charts/bpdm/Chart.yaml | head -n1 | awk '{ print $2}')
           SNAPSHOT=$(echo $CHART_VERSION | grep 'SNAPSHOT')
           if test -z $SNAPSHOT; then IS_RELEASE=true; else IS_RELEASE=false fi
-          echo "isRelease=$IS_RELEASE" >> GITHUB_OUTPUT
+          echo "isRelease=$IS_RELEASE" >> $GITHUB_OUTPUT
 
       - name: Configure Git
         if: steps.checkRelease.outputs.isRelease == 'true'