Update CHANGELOG.md

Co-authored-by: Richard Levasseur <[email protected]>

Author: mark-thm

CHANGELOG.md

@@ -40,6 +40,8 @@ A brief description of the categories of changes:
   of only the registered toolchains, which restores the previous behaviour that
   `bzlmod` users would have observed.
 - #617: allow spaces in filenames included in `whl_library`s
+* (pypi) Allow spaces in filenames included in `whl_library`s
+  ([617](https://github.com/bazelbuild/rules_python/issues/617))
 
 {#v0-0-0-added}
 ### Added