[stable-2.15] Fix f-string whitespace in release script (#81477) (#81478)

(cherry picked from commit 85d3305889)

packaging/release.py

@@ -977,7 +977,7 @@ def create_github_release_notes(upstream: Remote, repository: str, version: Vers
     variables = dict(
         version=version,
         releases=get_release_artifact_details(repository, version, validate),
-        changelog=f"https://github.com/{upstream.user}/{upstream.repo}/blob/v{ version }/changelogs/CHANGELOG-v{ version.major }.{ version.minor }.rst",
+        changelog=f"https://github.com/{upstream.user}/{upstream.repo}/blob/v{version}/changelogs/CHANGELOG-v{version.major}.{version.minor}.rst",
     )
 
     release_notes = template.render(**variables).strip()