Bump urllib3 in /examples/trace-analytics-sample-app/sample-app (#6851)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.6.3 to 2.7.0.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.6.3...2.7.0)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.7.0
  dependency-type: direct:production
...

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Author: dependabot[bot]

examples/trace-analytics-sample-app/sample-app/requirements.txt

@@ -8,6 +8,6 @@ opentelemetry-sdk==1.39.1
 protobuf==6.33.5
 requests==2.33.0
 setuptools==78.1.1
-urllib3==2.6.3
+urllib3==2.7.0
 werkzeug==3.1.6
 zipp==3.19.1