Update various GitHub action steps

bump versions of setup-python, checkout, and cache actions

Author: DougCorell

.github/workflows/preprints_a11y_tests.yml

@@ -68,14 +68,14 @@ jobs:
         python-version: [3.9.2]
     steps:
       - name: Git checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache Build Requirements
         id: pip-cache-step
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ${{ env.pythonLocation }}
           key: ${{ env.GHA_DISTRO }}-${{ env.pythonLocation }}-${{ hashFiles('requirements.txt') }}
@@ -98,13 +98,13 @@ jobs:
       matrix:
         browser: [chrome, firefox, edge]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Python 3.9.2
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: 3.9.2
       - name: Cache pip
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: ${{ env.pythonLocation }}
           key: ${{ env.GHA_DISTRO }}-${{ env.pythonLocation }}-${{ hashFiles('requirements.txt') }}