[native] Bump @commapp/sqlcipher-amalgamation to 4.5.5-b

Summary: This resolves ENG-6133. It also bumps us to version 4.5.5 of SQLCipher, which corresponds to version 3.42.0 of SQLite.

Test Plan:
Tested on both iOS and Android simultaneously:

1. Run the app
2. On both platform, open some threads to mark them as read
3. Make sure the other platform gets the update about the thread becoming read
4. Kill both apps
5. Make sure that the threads appear read when reopening each app

Reviewers: marcin, kamil

Reviewed By: marcin, kamil

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D10408