build(deps): bump urllib3

Bumps the pip group with 1 update in the /hedera/integration directory: [urllib3](https://github.com/urllib3/urllib3).


Updates `urllib3` from 2.6.1 to 2.6.3
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.6.1...2.6.3)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.3
  dependency-type: indirect
  dependency-group: pip
...

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Author: dependabot[bot]