[PR #12954/5c293f4f backport][3.14] Don't re-arm read timeout on a connection returned to the pool - #12966

The following news fragments found: [<PatchedFile: CHANGES/12953.bugfix.rst>, <PatchedFile: CHANGES/12954.bugfix.rst>]

Pattern: re.compile('CHANGES/(?P<issue_number>[^\./]+)\.(?P<fragment_type>bugfix|feature|deprecation|breaking|doc|packaging|contrib|misc)(\.\d+)?(\.[^\./]+)*$')