ci: Skip snapshot failures for Compressed Size action

Author: rschristian

.github/workflows/size.yml

@@ -21,5 +21,7 @@ jobs:
         uses: preactjs/compressed-size-action@v2
         with:
           pattern: 'test/fixtures/**/dist/!(*.map)'
-          build-script: 'test'
+          # We're using this to report size differences, not test, so update snapshots if they fail.
+          # The CI can catch the test failures instead.
+          build-script: 'test -- -u'
           repo-token: '${{ secrets.GITHUB_TOKEN }}'