feat(pre-commit): add Gitleaks hook for secret scanning

Signed-off-by: Klagarge <remi@heredero.ch>

.pre-commit-config.yaml

@@ -12,6 +12,11 @@ repos:
       -   id: pip-audit
           args: ["./src"]
 
+  - repo: https://github.com/gitleaks/gitleaks
+    rev: v8.24.2
+    hooks:
+      - id: gitleaks
+
 ci:
   # Leave pip-audit to only run locally and not in CI
   # pre-commit.ci does not allow network calls