fix(ci): set explicit sonarcloud action to resolve node version issue (…

…#162)

Until [this
issue](https://community.sonarsource.com/t/sonarsource-sonarcloud-github-action-failing-with-node-js-12-error/89664/2)
is resolved, we have to downgrade the sonarcloud action version

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
           TEST_USERS: ${{ secrets.E2E_TEST_USERS }}
 
       - name: SonarCloud Scan
-        uses: sonarsource/sonarcloud-github-action@master
+        uses: sonarsource/sonarcloud-github-action@v1.8
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}