Update .github/workflows/sonar.yml

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: echarrod

.github/workflows/sonar.yml

@@ -30,7 +30,8 @@ jobs:
 
       - name: Generate Sonar Report
         env:
-          TESTING_ETCD_ENDPOINTS: http://localhost:${{ job.services.etcd.ports[2379] }}
+-          TESTING_ETCD_ENDPOINTS: http://localhost:${{ job.services.etcd.ports[2379] }}
++          TESTING_ETCD_ENDPOINTS: http://localhost:${{ job.services.etcd.ports['2379'] }}
         run: go test -coverpkg=./... -coverprofile=coverage.out -json ./... > sonar-report.json
 
       - name: Upload coverage reports to Sonar