CI: release: use ubuntu-20.04 for Linux binaries

Use an old release of Ubuntu for better glibc compatibility

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

.github/workflows/release.yml

@@ -39,7 +39,8 @@ jobs:
         name: artifacts-darwin
         path: _artifacts/
   release:
-    runs-on: ubuntu-22.04
+    # An old release of Ubuntu is chosen for glibc compatibility
+    runs-on: ubuntu-20.04
     needs: artifacts-darwin
     timeout-minutes: 20
     steps: