Bump protobuf from 3.19.1 to 3.19.3

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.19.1 to 3.19.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/master/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 defusedxml==0.7.1
-protobuf==3.19.1
+protobuf==3.19.3
 pycryptodomex==3.12.0
 pyogg==0.6.14a.1
 requests==2.27.1