SQSCANGHA-121 Add vulnerability warning

action.yml

@@ -1,4 +1,5 @@
-name: Official SonarQube (Server, Cloud) Scan
+name: Official SonarQube Scan
+# Warning: changing name would change URL in the marketplace
 description: >
   Scan your code with SonarQube Server and Cloud to detect 
   issues in 30+ languages. (Formerly SonarQube and SonarCloud)
@@ -28,6 +29,9 @@ runs:
       shell: bash
       env:
         INPUT_PROJECTBASEDIR: ${{ inputs.projectBaseDir }}
+    - name: Vulnerability warning
+      shell: bash
+      run: echo "::warning title=Vulnerability warning::This version of the SonarQube Scanner GitHub Action is no longer supported and contains a security vulnerability. Please update your workflow to use sonarsource/sonarqube-scan-action@v6 for the latest security patches and features. For more information visit https://community.sonarsource.com/gha-v6-update"
     - name: Load Sonar Scanner CLI from cache
       id: sonar-scanner-cli
       uses: actions/cache@v4