Update to 1.2.22.0. From the changelog:

[Changes contributed by Val Rosca, updated by Andreas Marienborg]
- Wrap MatchSpy and ValueCountMatchSpy classes
- Wrap Enquire's add_matchspy and clear_matchspies methods, keeping
  track of references to Perl MatchSpy objects to avoid leaks.
- t/facets.t

[Changes contributed by Olly Betts]
- Fix infinite loop trying to build with CPANPLUS (fixes #692, reported
  by Andreas V旦gele).
- t/termgenerator.t: If a memory leak is detected, report how many
  objects were allocated before and after the test.
- Allow for "_gitN" tag on snapshots when checking for version
  compatibility with xapian-core.
- META.yml: Fix specified licence to be a valid name ('perl' instead of
  'perl_5').

(schmonz)