Add ban for pgp/gpg private key blocks
diff --git a/pre_commit_hooks/detect_private_key.py b/pre_commit_hooks/detect_private_key.py
index 693e59e..c8ee961 100644
--- a/pre_commit_hooks/detect_private_key.py
+++ b/pre_commit_hooks/detect_private_key.py
@@ -11,6 +11,7 @@
     b'BEGIN PRIVATE KEY',
     b'PuTTY-User-Key-File-2',
     b'BEGIN SSH2 ENCRYPTED PRIVATE KEY',
+    b'BEGIN PGP PRIVATE KEY BLOCK',
 ]