Upgrade to Go 1.27

Closes #15228

common/herrors/errors.go

@@ -178,3 +178,14 @@ func improveIfNilPointerMsg(inErr error) string {
 	s := fmt.Sprintf("– %s is nil; wrap it in if or with: {{ with %s }}{{ .%s }}{{ end }}", receiverName, receiver, field)
 	return nilPointerErrRe.ReplaceAllString(inErr.Error(), s)
 }
+
+// Or returns the first non-nil error from the given list of errors.
+// If all errors are nil, it returns nil.
+func Or(errs ...error) error {
+	for _, err := range errs {
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

common/hugio/copy.go

@@ -82,6 +82,9 @@ func CopyDir(fs afero.Fs, from, to string, shouldCopy func(filename string) bool
 				return err
 			}
 		} else {
+			if shouldCopy != nil && !shouldCopy(fromFilename) {
+				continue
+			}
 			if err := CopyFile(fs, fromFilename, toFilename); err != nil {
 				return err
 			}