bridge-utils: Update to version 1.7.1

bridge-utils: Update to version 1.7.1

- Update from version 1.5 (2011) to 1.7.1 (2021)
- bridge-utils has been marked as deprecated in June 2020 and that only critical bug
   fixes will be applied in future. Since that time there have been three commits in
   the git repository, none of which are critical at all but mostly cleaning up. The
   last commit was in January 2022.
- Even though no new changes are planned it makes sense to update this package from
   the 2011 version to the 2021 version.
- The patch that was previously used is no longer needed as it is now built into the
   source tarball.
- Rootfile update not required.
- Changelog was last updated in 2006. It looks like the only source for changes is
   the git commits. There are 28 commits between version 1.5 and 1.7.1
   https://git.kernel.org/pub/scm/network/bridge/bridge-utils.git/log/?h=main

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>