use same os for building published artifact as we use when testing

Jake Champion · Jake Champion · commit d8cc9ee4eac1 · 2023-05-11T16:23:33.000+01:00
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
@@ -63,7 +63,7 @@ jobs:
           git push --force
 
   publish:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: release
     if: ${{ needs.release.outputs.releases_created }}
     steps:
