Update PEP8 check workflows to version 1

Author: mgough-970

.github/workflows/weekly_pep8_style_check.yml

@@ -10,10 +10,10 @@ on:
 
 jobs:
   Notebook_PEP8_Check:
-   uses: spacetelescope/notebook-ci-actions/.github/workflows/all_notebooks_pep8check.yml@v3
+   uses: spacetelescope/notebook-ci-actions/.github/workflows/all_notebooks_pep8check.yml@v1
    with:
      python-version: ${{ vars.PYTHON_VERSION || '3.11' }}
   Script_PEP8_Check:
-   uses: spacetelescope/notebook-ci-actions/.github/workflows/all_scripts_pep8check.yml@v3
+   uses: spacetelescope/notebook-ci-actions/.github/workflows/all_scripts_pep8check.yml@v1
    with:
      python-version: ${{ vars.PYTHON_VERSION || '3.11' }}