[Misc] Apply SonarCloud rule cpp:S5502 (!1121) · Merge requests · CTA / CTA · GitLab

Description

Rule name: Use '[[' instead of '[' for conditional tests. The '[[' construct is safer and more feature-rich.
Rule code: cpp:S5502
Rule link: https://sonarcloud.io/project/issues?open=AYjy1BWhx-2o8nUjJdYT&id=cern-cta_CTA

Checklist

Documentation reflects the changes made.
Merge Request title is clear, concise, and suitable as a changelog entry. See our contributing docs

References

Closes #1383 (closed)