Update used-by.yml to explicit committer

I am not sure why every used-by pull request has my user commit. It may have used my personal token somewhere but I don't see it. Maybe I need to explicit `committer`? Just a try.

Author: shenxianpeng

.github/workflows/used-by.yml

@@ -21,6 +21,7 @@ jobs:
         with:
           add-paths: "README.md" # the file path to commit
           commit-message: "chore: update used-by badge by github-actions[bot]"
+          committer: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
           title: "chore: automatically update used-by badge"
           base: main
           labels: skip-changelog