Merge pull request #2495 from python-trio/dependabot/pip/certifi-2022.12.7

Bump certifi from 2022.9.24 to 2022.12.7

Author: harahu

docs-requirements.txt

@@ -14,7 +14,7 @@ attrs==22.1.0
     #   outcome
 babel==2.11.0
     # via sphinx
-certifi==2022.9.24
+certifi==2022.12.7
     # via requests
 charset-normalizer==2.1.1
     # via requests