Bump SonarSource/sonarqube-scan-action from 5 to 6 in /.github/workflows

Bumps [SonarSource/sonarqube-scan-action](https://github.com/sonarsource/sonarqube-scan-action) from 5 to 6.
- [Release notes](https://github.com/sonarsource/sonarqube-scan-action/releases)
- [Commits](SonarSource/sonarqube-scan-action@v5...v6)

---
updated-dependencies:
- dependency-name: SonarSource/sonarqube-scan-action
  dependency-version: '6'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/coverage.yml

@@ -6,7 +6,7 @@ on:
 
 # Actions
 # shivammathur/setup-php@v2 https://github.com/marketplace/actions/setup-php-action
-# SonarSource/sonarqube-scan-action@v5 https://github.com/marketplace/actions/official-sonarqube-scan
+# SonarSource/sonarqube-scan-action@v6 https://github.com/marketplace/actions/official-sonarqube-scan
 
 jobs:
 
@@ -137,6 +137,6 @@ jobs:
           sed 's#'$GITHUB_WORKSPACE'#/github/workspace#g' build/coverage/junit.xml > build/sonar-junit.xml
           sed 's#'$GITHUB_WORKSPACE'#/github/workspace#g' build/coverage/clover.xml > build/sonar-coverage.xml
       - name: SonarCloud Scan
-        uses: SonarSource/sonarqube-scan-action@v5
+        uses: SonarSource/sonarqube-scan-action@v6
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}