Prepare version 2.15.1

Merged
KL
1d ago
+14-0

Prepare 2.15.1 for httpx2 and httpcore2 with a changelog entry for #1253.

This is a patch release: #1253 stops CPU usage from growing over the lifetime of a reused client on Linux with OpenSSL older than 3.4.

Package versions remain derived from the release tag. No tag or release is created by this PR.

AI Disclaimer

This PR was developed with the assistance of either Claude or Codex. I've reviewed and verified the changes.