build(deps): bump opentelemetry-exporter-otlp in /python-example

Bumps [opentelemetry-exporter-otlp](https://github.com/open-telemetry/opentelemetry-python) from 1.20.0 to 1.24.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-python/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-python/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-python@v1.20.0...v1.24.0)

---
updated-dependencies:
- dependency-name: opentelemetry-exporter-otlp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

python-example/requirements.txt

@@ -1,6 +1,6 @@
 Flask
 opentelemetry-distro==0.41b0
-opentelemetry-exporter-otlp==1.20.0
+opentelemetry-exporter-otlp==1.24.0
 opentelemetry-instrumentation==0.41b0
 opentelemetry-instrumentation-flask==0.41b0