Merge branch 'gh_releases_prereleases' into gh_actions_sdists_release_assets

Author: Matthias Koeppe

.github/workflows/dist.yml

@@ -110,7 +110,7 @@ jobs:
 
     needs: [release_dist, sdists_for_pypi]
     runs-on: ubuntu-latest
-    if: (success() || failure()) && github.repository == 'sagemath/sage' && startsWith(github.ref, 'refs/tags/') && !contains(github.ref, 'beta') && !contains(github.ref, 'rc')
+    if: (success() || failure()) && github.repository == 'sagemath/sage' && startsWith(github.ref, 'refs/tags/')
     steps:
       - uses: actions/download-artifact@v4
         with:
@@ -122,6 +122,7 @@ jobs:
       - uses: softprops/action-gh-release@v2
         with:
           generate_release_notes: true
+          prerelease: ${{ contains(github.ref, 'beta') || contains(github.ref, 'rc') }}
           files: |
             dist/*
             upstream/*