feat(toolchains): Add 3.10.20, 3.11.15, 3.12.13, 3.13.{12,13} 3.14.{3,4}, 3.15.0a8

Author: pjjw

CHANGELOG.md

@@ -68,6 +68,12 @@ END_UNRELEASED_TEMPLATE
 ### Added
 * (runfiles) Added a pathlib-compatible API: {obj}`Runfiles.root()`
   Fixes [#3296](https://github.com/bazel-contrib/rules_python/issues/3296).
+* (toolchains) `3.13.12`, `3.14.3` Python toolchain from [20260325] release.
+* (toolchains) `3.10.20`, `3.11.15`, `3.12.13`, `3.13.13` `3.14.4`, `3.15.0a8`
+* Python toolchain from [20260414] release.
+
+[20260325]: https://github.com/astral-sh/python-build-standalone/releases/tag/20260325
+[20260414]: https://github.com/astral-sh/python-build-standalone/releases/tag/20260414
 
 {#v2-0-0}
 ## [2.0.0] - 2026-04-09