use bot as author

.github/workflows/update-preview-deps-ci.yml

@@ -66,4 +66,4 @@ jobs:
           base: "feat/v2-ci"
           add-paths: yarn.lock
           committer: "GitHub <noreply@github.com>"
-          author: "GitHub <noreply@github.com>"
+          author: "GitHub <github-actions[bot]@users.noreply.github.com>"

.github/workflows/update-preview-deps.yml

@@ -66,4 +66,4 @@ jobs:
           base: "feat/v2"
           add-paths: yarn.lock
           committer: "GitHub <noreply@github.com>"
-          author: "GitHub <noreply@github.com>"
+          author: "GitHub <github-actions[bot]@users.noreply.github.com>"