chore(deps): bump urllib3 in /tools/apigee-proxy-modifier-validator

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]>

Author: dependabot[bot]

tools/apigee-proxy-modifier-validator/requirements.txt

@@ -13,4 +13,4 @@ requests==2.32.3
 rsa==4.9.1
 tabulate==0.9.0
 tomlkit==0.13.2
-urllib3==2.4.0
+urllib3==2.5.0