Revert "chore: change runner in release workflow"

This reverts commit 50aca2b.

Author: amiut

.github/workflows/release.yml

@@ -5,7 +5,7 @@ on:
 jobs:
   build-release:
     name: 🎉 New Release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: 🚚 Get latest code