Merge pull request #49 from reviewdog/depup/reviewdog

chore(deps): update reviewdog to 0.20.3

Author: shmokmt

README.md

@@ -32,7 +32,7 @@ steps:
 steps:
   - uses: reviewdog/action-setup@v1
     with:
-      reviewdog_version: v0.20.2
+      reviewdog_version: v0.20.3
   - run: reviewdog -version
 ```