chore: Update changelog for 0.31.0 (bazel-contrib#1754)

* Create 0.31.0 section
* Move pystar note out of 0.30.0 section and into 0.31.0

Author: rickeylev

CHANGELOG.md

@@ -21,9 +21,9 @@ A brief description of the categories of changes:
 
 [0.XX.0]: https://github.com/bazelbuild/rules_python/releases/tag/0.XX.0
 
-## [0.30.0] - 2024-02-12
+## [0.31.0] - 2024-02-12
 
-[0.30.0]: https://github.com/bazelbuild/rules_python/releases/tag/0.30.0
+[0.31.0]: https://github.com/bazelbuild/rules_python/releases/tag/0.31.0
 
 ### Changed
 
@@ -33,6 +33,12 @@ A brief description of the categories of changes:
   under Bazel 7, the builtin global symbol `PyInfo` is **not** the same as what
   is loaded from rules_python. The same is true of `PyRuntimeInfo`.
 
+## [0.30.0] - 2024-02-12
+
+[0.30.0]: https://github.com/bazelbuild/rules_python/releases/tag/0.30.0
+
+### Changed
+
 * (toolchains) Windows hosts always ignore pyc files in the downloaded runtimes.
   This fixes issues due to pyc files being created at runtime and affecting the
   definition of what files were considered part of the runtime.