fix: bump Azure/login from 1.5.1 to 2.1.1

Bumps [Azure/login](https://github.com/azure/login) from 1.5.1 to 2.1.1.
- [Release notes](https://github.com/azure/login/releases)
- [Commits](Azure/login@v1.5.1...v2.1.1)

---
updated-dependencies:
- dependency-name: Azure/login
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/validation.yml

@@ -28,7 +28,7 @@ jobs:
             args: -m integration
     steps:
       - uses: actions/checkout@v4
-      - uses: Azure/login@v1.5.1
+      - uses: Azure/login@v2.1.1
         continue-on-error: true
         with:
           creds: ${{ secrets.AZURE_CREDENTIALS }}