build: 3.10b3 is out

Author: nedbat

.github/workflows/coverage.yml

@@ -34,8 +34,7 @@ jobs:
           - "3.7"
           - "3.8"
           - "3.9"
-          # wait for 3.10.0b3 for everything to work
-          #- "3.10.0-beta.2"
+          - "3.10.0-beta.3"
           - "pypy3"
         exclude:
           # Windows PyPy doesn't seem to work?

.github/workflows/testsuite.yml

@@ -30,8 +30,7 @@ jobs:
           - "3.7"
           - "3.8"
           - "3.9"
-          # wait for 3.10.0b3 for everything to work
-          #- "3.10.0-beta.2"
+          - "3.10.0-beta.3"
           - "pypy3"
         exclude:
           # Windows PyPy doesn't seem to work?