experiments: commit with --no-verify in executors (#5078)

* git: add no_verify flag for commit()

* experiments: commit with --no-verify in executors

* git: wrap hook exceptions with SCMError

* update hook file perms

* update dulwich to 0.20.15

* update pygit2 commit def

* skip hook tests on windows

dvc/scm/git/backend/gitpython.py

@@ -200,8 +200,13 @@ class GitPythonBackend(BaseGitBackend):  # pylint:disable=abstract-method
 
             logger.exception(msg)
 
-    def commit(self, msg: str):
-        self.repo.index.commit(msg)
+    def commit(self, msg: str, no_verify: bool = False):
+        from git.exc import HookExecutionError
+
+        try:
+            self.repo.index.commit(msg, skip_hooks=no_verify)
+        except HookExecutionError as exc:
+            raise SCMError("Git pre-commit hook failed") from exc
 
     def checkout(
         self, branch: str, create_new: Optional[bool] = False, **kwargs