Change timestamp data type. (#4355)

...ql/2024-02-14-135828_change_time_stamp_data_type/down.sql

...ysql/2024-02-14-135828_change_time_stamp_data_type/up.sql

...ql/2024-02-14-135953_change_time_stamp_data_type/down.sql

...esql/2024-02-14-135953_change_time_stamp_data_type/up.sql

...te/2024-02-14-140000_change_time_stamp_data_type/down.sql

...lite/2024-02-14-140000_change_time_stamp_data_type/up.sql

src/api/core/two_factor/authenticator.rs

src/db/models/two_factor.rs

src/db/schemas/mysql/schema.rs

src/db/schemas/postgresql/schema.rs

src/db/schemas/sqlite/schema.rs