update pep8 check

change pep8 workflow to point at the centralized version

.github/workflows/pep8_nb_style_check.yml

@@ -10,54 +10,5 @@ on:
       - '*.yml'
 
 jobs:
-  gather-notebooks:
-    # below logic will only allow workflow to trigger under specific conditions
-    if: github.event.pull_request.state == 'open'
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-    - uses: actions/checkout@v3
-    ## routine to gather only the changed notebook files and supply them to the matrix
-    - name: changed-files
-      id: get-changed-files
-      uses: tj-actions/changed-files@v35
-      with:
-        separator: ","
-        files: |
-          **/*.ipynb
-    ## convert the list of files to an array and push them into the matrix as a json object
-    - name: set-matrix
-      id: set-matrix
-      run: |
-        IFS=',' read -r -a array <<< "${{steps.get-changed-files.outputs.all_changed_files}}"
-        echo "{$array}"
-        echo "matrix=$(jq --compact-output --null-input '$ARGS.positional' --args -- "${array[@]}")" >> $GITHUB_OUTPUT
-
-  notebook-style-checks:
-    needs: gather-notebooks
-    environment: ci_env
-    runs-on: ubuntu-latest
-    strategy:
-        fail-fast: false
-        matrix:
-            notebooks: ${{ fromJson(needs.gather-notebooks.outputs.matrix) }}
-    steps:
-      - uses: actions/checkout@v3
-      - name: Set up Python 3.8.12
-        uses: actions/setup-python@v4 ## needed for caching
-        with:
-          python-version: 3.8.12
-          cache: 'pip'
-      - name: Add conda to system path
-        run: |
-          # $CONDA is an environment variable pointing to the root of the miniconda directory
-          echo $CONDA/bin >> $GITHUB_PATH
-      - name: Install dependencies
-        run: |
-          pip install flake8
-          pip install numpy
-          pip install pytz
-      - name: Run PEP8 style check
-        run: |
-          python .github/helpers/pep8_nb_style_checker.py -f ${{ matrix.notebooks }}
+  Notebook_PEP8_Check:
+   uses: spacetelescope/notebook-ci-actions/.github/workflows/notebook_pep8check.yml@main