try maturin beta release

Author: davidhewitt

.github/workflows/ci.yml

@@ -503,6 +503,7 @@ jobs:
           # FIXME: Unpin when Python 3.8 support is dropped. (3.9 requires Windows 10)
           rust-toolchain: ${{ (matrix.os == 'windows' && '1.77') || 'stable' }}
           docker-options: -e CI
+          maturin-version: 1.7.8-beta.1
 
       - run: ${{ (matrix.os == 'windows' && 'dir') || 'ls -lh' }} dist/