Bump codeowners

Author: orta

.github/workflows/codeowners-merge.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Run Codeowners merge check
-        uses: OSS-Docs-Tools/code-owner-self-merge@1.5.3
+        uses: OSS-Docs-Tools/code-owner-self-merge@1.5.4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with: