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

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] <support@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