deps: bump github.com/stretchr/testify from 1.11.0 to 1.11.1 in /azure-ipam (#3971)

deps: bump github.com/stretchr/testify in /azure-ipam

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.11.0 to 1.11.1.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.11.0...v1.11.1)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-version: 1.11.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]