Bump protobuf from 3.19.4 to 3.19.5 in /speech/conformer/pytorch

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.19.4 to 3.19.5.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.19.4...v3.19.5)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
...

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

Author: dependabot[bot]

speech/conformer/pytorch/requirements.txt

@@ -4,7 +4,7 @@ fire==0.4.0
 pyyaml==5.4.1
 pandas==1.1.5
 wandb==0.12.8
-protobuf==3.19.4
+protobuf==3.19.5
 pillow==8.4.0
 pytest==6.2.5
 editdistance==0.5.2