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] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -133,7 +133,7 @@ jobs:
     - name: Set up Sonar Cloud tools
       id: sonar
       if: matrix.static-analysis == 'sonar'
-      uses: SonarSource/sonarqube-scan-action/install-build-wrapper@v5
+      uses: SonarSource/sonarqube-scan-action/install-build-wrapper@v6
 
     - name: Build and install QtKeychain
       if: "!startsWith(matrix.os, 'ubuntu')"
@@ -226,7 +226,7 @@ jobs:
 
     - name: Run sonar-scanner
       if: matrix.static-analysis == 'sonar'
-      uses: SonarSource/sonarqube-scan-action@v5
+      uses: SonarSource/sonarqube-scan-action@v6
       env:
         # GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}