Revert "try pinning to older 3.10 (#7344)"

This reverts commit f581dfa.

Author: alex

.github/workflows/ci.yml

@@ -344,7 +344,7 @@ jobs:
       matrix:
         PYTHON:
           - {VERSION: "3.6", TOXENV: "py36", EXTRA_CFLAGS: ""}
-          - {VERSION: "3.10.3", TOXENV: "py310", EXTRA_CFLAGS: "-DUSE_OSRANDOM_RNG_FOR_TESTING"}
+          - {VERSION: "3.10", TOXENV: "py310", EXTRA_CFLAGS: "-DUSE_OSRANDOM_RNG_FOR_TESTING"}
         RUST:
           - stable
     name: "${{ matrix.PYTHON.TOXENV }} on macOS"