chore(deps): update pre-commit hook gitleaks/gitleaks to v8.21.3

Author: renovate[bot]

.pre-commit-config.yaml

@@ -19,7 +19,7 @@ repos:
       - id: go-mod-tidy
 
   - repo: https://github.com/gitleaks/gitleaks
-    rev: v8.18.4
+    rev: v8.21.3
     hooks:
       - id: gitleaks