Update version to 23.0

Update sentry version

Remove broken tests (testUserAgent, testaddSearchEngine)

Get latest SHA from shavar-prod-lists (mozilla-mobile#5751)

Fix mozilla-mobile#5585 - Followup. Move leanplum startup to correct …

…location (mozilla-mobile#5699)

Update version to 20.1

mozilla-mobile#5619 follow-up: Fix test breakage (mozilla-mobile#5625)

Fix mozilla-mobile#5030 - Added bookmark to FF via share sheet doesn’…

…t show up in mobile bookmarks (mozilla-mobile#5041)

Update version to 17.2.

Update version number to 17.1