[Release|CI/CD] Fix Create polkadot-vX.YY.Z tag flow (#10551)

Switch to `ubuntu-latest`

(cherry picked from commit 0f0f0ae)

Author: EgorPopelyaev

.github/workflows/release-60_create-old-release-tag.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   create-old-release-tag:
-    runs-on: parity-default
+    runs-on: ubuntu-latest
     environment: release
     env:
       PGP_KMS_KEY: ${{ secrets.PGP_KMS_SIGN_COMMITS_KEY }}