Merge pull request #79 from GitGuardian/henri/update-ggshield-version

chore(pre-commit): update to latest ggshield

Author: agateau-gg

.pre-commit-config.yaml

@@ -50,7 +50,7 @@ repos:
       - id: prettier
 
   - repo: https://github.com/gitguardian/ggshield
-    rev: v1.19.1
+    rev: v1.21.0
     hooks:
       - id: ggshield
         language_version: python3