core (memory/migration): ignore FTS table when autogenerating script for migration: SQLite Full-Text Search stable are not associated to Python object and can't be detected by Alembic. To avoid the generation of unwanted drop commands, they are now ignored when autogenerating migration scripts. rel 364

this certificates are used to enable TLS during tests. Those must be the same as in
backend_e2e (they are generated there)