[noissue]: Update opentelemetry-exporter-otlp-proto-http requirement

Updates the requirements on [opentelemetry-exporter-otlp-proto-http](https://github.com/open-telemetry/opentelemetry-python) to permit the latest version.
- [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@v1.17.0...v1.21.0)

---
updated-dependencies:
- dependency-name: opentelemetry-exporter-otlp-proto-http
  dependency-type: direct:production
...

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

requirements.txt

@@ -22,7 +22,7 @@ jinja2>=3.1,<=3.1.2
 json_stream>=2.3.2,<2.4
 jq>=1.6.0,<1.7.0
 opentelemetry-distro[otlp]>=0.38b0,<=0.41b0
-opentelemetry-exporter-otlp-proto-http>=1.17.0,<=1.20.0
+opentelemetry-exporter-otlp-proto-http>=1.17.0,<=1.21.0
 opentelemetry-instrumentation-django>=0.38b0,<=0.41b0
 opentelemetry-instrumentation-wsgi>=0.38b0,<=0.41b0
 protobuf>=4.21.1,<4.25.1