Update travis

Author: nzagorchev

.travis.yml

@@ -1,7 +1,7 @@
 # Build only if commit is tagged or PR is opened/updated
 if: |
-((tag IS present) OR (type = pull_request)) AND \
-((commit_message != "update spm") AND (sender != env(GITHUB_NAME)))
+  ((tag IS present) OR (type = pull_request)) AND \
+  ((commit_message != 'update spm') AND (sender != env(GITHUB_NAME)))
 
 language: objective-c
 osx_image: xcode13.1