Bump fastavro from 1.8.2 to 1.8.3 (#166)

Bumps [fastavro](https://github.com/fastavro/fastavro) from 1.8.2 to 1.8.3.
- [Release notes](https://github.com/fastavro/fastavro/releases)
- [Changelog](https://github.com/fastavro/fastavro/blob/master/ChangeLog)
- [Commits](fastavro/fastavro@1.8.2...1.8.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -2,7 +2,7 @@ avro==1.11.2
 dpkt==1.9.8
 lxml==4.9.3
 numpy==1.25.2
-fastavro==1.8.2
+fastavro==1.8.3
 six>=1.12.0
 google-cloud-pubsub==2.18.4
 google-cloud-bigquery==3.11.4