Added changelog entry for deb prerelease version change (#30184)

This commit adds a changelog entry for the change in #29000.

Author: rjernst

docs/CHANGELOG.asciidoc

@@ -59,6 +59,10 @@ ones that the user is authorized to access in case field level security is enabl
 [float]
 === Bug Fixes
 
+Fixed prerelease version of elasticsearch in the `deb` package to sort before GA versions
+({pull}29000[#29000])
+
+=== Regressions
 Fail snapshot operations early when creating or deleting a snapshot on a repository that has been
 written to by an older Elasticsearch after writing to it with a newer Elasticsearch version. ({pull}30140[#30140])