fix: ensure regex always matches

Signed-off-by: Oskar Manhart <[email protected]>

Author: oskardotglobal

.pre-commit-hooks.yaml

@@ -30,3 +30,4 @@
   entry: >-
     (?im)^signed[- ]?off[- ]?by:\s*["\']?.+?["\']?\s*<[^>]+>
   language: pygrep
+  args: [--negate]