Add gitleaks to pre-commit to check so no tokens api keys etc. gets commited to the repo (#4454)

See https://github.com/gitleaks/gitleaks

Author: frjo

.pre-commit-config.yaml

@@ -76,3 +76,7 @@ repos:
         additional_dependencies:
           - stylelint@16.11.0
           - stylelint-config-standard-scss@13.1.0
+  - repo: https://github.com/gitleaks/gitleaks
+    rev: v8.24.0
+    hooks:
+      - id: gitleaks