Add support for pydantic 1.9, add post_bulk_update signal, and bug fixes

0.10.24

✨ Features

• Add post_bulk_update signal (by @ponytailer - thanks!) #524

🐛 Fixes

• Fix support for pydantic==1.9.0 #502
• Fix timezone issues with datetime #504
• Remove literal binds in query generation to unblock postgres arrays #/tophat/ormar-postgres-extensions/9
• Fix bulk update for JSON fields #519

💬 Other

• Improve performance of bulk_create by bypassing databases execute_many suboptimal implementation. (by @Mng-dev-ai thanks!) #520
• Bump min. required databases version for sqlalchemy 1.4 to >=5.4.