Remove now off-by-default PyPy from cibuildwheel skip list

Author: hukkin

.github/workflows/tests.yaml

@@ -9,7 +9,7 @@ on:
 
 env:
  CIBW_TEST_COMMAND: python -m unittest discover --start-directory {project}
- CIBW_SKIP: pp* cp38-* cp39-* cp310-*
+ CIBW_SKIP: cp38-* cp39-* cp310-*
  CIBW_ENVIRONMENT_PASS_LINUX: TOMLI_USE_MYPYC
 
 jobs: