chore(main): Release v0.0.21

[cq-bot]

🤖 I have created a release beep boop

0.0.21 (2024-01-02)

Bug Fixes

• deps: Update dependency black to v23.11.0 (#41) (34bfdec)
• deps: Update dependency black to v23.12.1 (#45) (3505670)
• deps: Update dependency grpcio to v1.59.3 (#38) (251df41)
• deps: Update dependency grpcio to v1.60.0 (#46) (2bff16d)
• deps: Update dependency grpcio-tools to v1.59.3 (#39) (21cfa08)
• deps: Update dependency grpcio-tools to v1.60.0 (#47) (411af61)
• deps: Update dependency protobuf to v4.25.1 (#42) (f0d28c6)
• deps: Update dependency pytest to v7.4.4 (#44) (552ab23)
• Generate Python Code from plugin-pb (#50) (3360e7e)

---

This PR was generated with Release Please. See documentation.