Update git submodules
- Update extensions/WikimediaEvents from branch 'wmf/1.29.0-wmf.12'
- Turn off sister search AB test.
This partially reverts commit ed0e515e4a64cbf062ae6b387360acc52c65db1b and a89355a1b43d4cd1c9f4ec3746cae7d4933b6ec0.
This keeps the new 'validBuckets' variable to list which buckets should be used for a subtest, along with the new distinction of interwiki (textcat) clicks from standard clicks. For that purpose this also keeps the new TestSearchSatisfaction2 schema revision.
Bug: T157942 Change-Id: Iae52ac601fbb1603d804a7f0e131dbb73bf95e66 (cherry picked from commit e87fdecfc6afe735c33c2d02efcfa744f9b926d9)
- Turn off sister search AB test.