add self-hosted runner (#1190)

Author: sean-breen

.github/workflows/release-branch.yml

@@ -31,7 +31,7 @@ jobs:
       contents: write
       pull-requests: write
     name: Update Release
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-22.04-amd64
     steps:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
         with: