chore(deps): bump the production-dependencies group across 1 director…

…y with 3 updates

Bumps the production-dependencies group with 3 updates in the /metrics-exporter directory: [prometheus-client](https://github.com/prometheus/client_python), [structlog](https://github.com/hynek/structlog) and [redis](https://github.com/redis/redis-py).


Updates `prometheus-client` from 0.20.0 to 0.21.0
- [Release notes](https://github.com/prometheus/client_python/releases)
- [Commits](prometheus/client_python@v0.20.0...v0.21.0)

Updates `structlog` from 24.2.0 to 24.4.0
- [Release notes](https://github.com/hynek/structlog/releases)
- [Changelog](https://github.com/hynek/structlog/blob/main/CHANGELOG.md)
- [Commits](hynek/structlog@24.2.0...24.4.0)

Updates `redis` from 5.0.7 to 5.1.0
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.0.7...v5.1.0)

---
updated-dependencies:
- dependency-name: prometheus-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: structlog
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
...

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

metrics-exporter/requirements.txt

@@ -1,4 +1,4 @@
-prometheus-client==0.20.0
-structlog==24.2.0
+prometheus-client==0.21.0
+structlog==24.4.0
 celery==5.4.0
-redis==5.0.7
+redis==5.1.0