Bump opentelemetry-exporter-prometheus from 0.49b1 to 0.50b0

Bumps [opentelemetry-exporter-prometheus](https://github.com/open-telemetry/opentelemetry-python) from 0.49b1 to 0.50b0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-python/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-python/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-python/commits)

---
updated-dependencies:
- dependency-name: opentelemetry-exporter-prometheus
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -19,7 +19,7 @@ classifiers = [
 ]
 dependencies = [
   "opentelemetry-api==1.28.2",
-  "opentelemetry-exporter-prometheus==0.49b1",
+  "opentelemetry-exporter-prometheus==0.50b0",
   "opentelemetry-sdk==1.28.2",
   "paho-mqtt==2.1.0",
   "redis==5.2.1",