switch flake8 install to pip from conda for gh actions

.github/workflows/fluxdataqaqc_tests.yml

@@ -16,13 +16,20 @@ jobs:
       run: |
         # $CONDA is an environment variable pointing to the root of the miniconda directory
         $CONDA/bin/conda env update --file environment.yml --name base
+        python -m pip install --upgrade pip
     - name: Lint with flake8
       run: |
-        $CONDA/bin/conda install flake8
+        pip install flake8
+        #$CONDA/bin/conda install flake8
+        #
         # stop the build if there are Python syntax errors or undefined names
-        $CONDA/bin/flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --builtins='Path'
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --builtins='Path'
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        $CONDA/bin/flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        # stop the build if there are Python syntax errors or undefined names
+        #$CONDA/bin/flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --builtins='Path'
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        #$CONDA/bin/flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
         conda install pytest