build(deps): bump sonarqube in /.github/actions/sonar

Bumps sonarqube from 25.11.0.114957-community to 26.1.0.118079-community.

---
updated-dependencies:
- dependency-name: sonarqube
  dependency-version: 26.1.0.118079-community
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/actions/sonar/Dockerfile

@@ -1,5 +1,5 @@
 # Use the official SonarQube 10.6.0 community image as the base
-FROM sonarqube:25.11.0.114957-community
+FROM sonarqube:26.1.0.118079-community
 
 # Define version and plugin JAR name as environment variables
 # renovate: datasource=github-releases depName=sonarqube-community-branch-plugin packageName=mc1arke/sonarqube-community-branch-plugin