Update pip by conda

Author: makbigc

ci/azure/posix.yml

@@ -52,7 +52,7 @@ jobs:
         if [ "$(uname)" == "Linux" ]; then sudo apt-get install -y libc6-dev-i386 $EXTRA_APT; fi
         echo "Creating Environment"
         ci/setup_env.sh
-        python -m pip install --update pip
+        conda update pip
         pip install pytest-azurepipelines
       displayName: 'Setup environment and build pandas'
     - script: |

ci/azure/windows.yml

@@ -25,7 +25,7 @@ jobs:
       displayName: Create anaconda environment
     - script: |
         call activate pandas-dev
-        call python -m pip install --update pip
+        call conda update pip
         call pip install pytest-azurepipelines
         call conda list
         ci\\incremental\\build.cmd