Merge branch 'master' into support-async-scenarios

Author: graingert

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.6", "3.7", "3.8", "3.9", 3.10.0-alpha.6]
+        python-version: ["3.6", "3.7", "3.8", "3.9", 3.10.0-beta.4]
 
     steps:
     - uses: actions/checkout@v2