build(deps): bump urllib3 from 2.4.0 to 2.5.0 in /observability/test (#25)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.4.0 to 2.5.0.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.4.0...2.5.0)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.5.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

observability/test/requirements.txt

@@ -2,4 +2,4 @@ certifi==2025.4.26
 charset-normalizer==3.4.2
 idna==3.10
 requests==2.32.4
-urllib3==2.4.0
+urllib3==2.5.0