Lock gofumpt to v0.3.0 and run it (#18866)

We can't depend on `latest` version of gofumpt because the output will
not be stable across versions. Lock it down to the latest version
released yesterday and run it again.

modules/notification/mail/mail.go

@@ -29,7 +29,8 @@ func NewNotifier() base.Notifier {
 }
 
 func (m *mailNotifier) NotifyCreateIssueComment(doer *user_model.User, repo *repo_model.Repository,
-	issue *models.Issue, comment *models.Comment, mentions []*user_model.User) {
+	issue *models.Issue, comment *models.Comment, mentions []*user_model.User,
+) {
 	ctx, _, finished := process.GetManager().AddContext(graceful.GetManager().HammerContext(), fmt.Sprintf("mailNotifier.NotifyCreateIssueComment Issue[%d] #%d in [%d]", issue.ID, issue.Index, issue.RepoID))
 	defer finished()