CI:Pin pytest version to 7.0.1 on Azure Pipelines

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azure-pipelines.yml

@@ -172,7 +172,7 @@ stages:
             curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && \
             python3.8 get-pip.py && \
             pip3 --version && \
-            pip3 install setuptools==59.6.0 wheel numpy==1.18.5 cython==0.29.18 pybind11 pytest pytest-timeout pytest-xdist pytest-env pytest-cov Pillow mpmath pythran==0.10.0 --user && \
+            pip3 install setuptools==59.6.0 wheel numpy==1.18.5 cython==0.29.18 pybind11 pytest==7.0.1 pytest-timeout pytest-xdist pytest-env pytest-cov Pillow mpmath pythran==0.10.0 --user && \
             apt-get -y install gcc-5 g++-5 gfortran-8 wget && \
             cd .. && \
             mkdir openblas && cd openblas && \
@@ -285,7 +285,7 @@ stages:
         Pillow
         pybind11
         pythran==0.10.0
-        pytest
+        pytest==7.0.1
         pytest-cov
         pytest-env
         pytest-timeout