Replace all instances of fmt.Errorf(%v) with fmt.Errorf(%w) (#21551)

Found using
`find . -type f -name '*.go' -print -exec vim {} -c
':%s/fmt\.Errorf(\(.*\)%v\(.*\)err/fmt.Errorf(\1%w\2err/g' -c ':wq' \;`

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/asymkey/ssh_key_deploy.go

@@ -151,7 +151,7 @@ func AddDeployKey(repoID int64, name, content string, readOnly bool) (*DeployKey
 		pkey.Content = content
 		pkey.Name = name
 		if err = addKey(ctx, pkey); err != nil {
-			return nil, fmt.Errorf("addKey: %v", err)
+			return nil, fmt.Errorf("addKey: %w", err)
 		}
 	}