Add pytest-azurepipelines for better Azure Pipelines coverage integration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Abel Milash

.azdo/ci-pr.yaml

@@ -42,7 +42,7 @@ extends:
 
         - script: |
             python -m pip install --upgrade pip
-            python -m pip install flake8 black build diff-cover
+            python -m pip install flake8 black build diff-cover pytest-azurepipelines
             python -m pip install -e .[dev]
           displayName: 'Install dependencies'