Update actions to NodeJS 20

.github/workflows/gollum-tests.yml

@@ -13,13 +13,13 @@ jobs:
         specutils-version: [1.6, 1.7, 1.8, 1.9]
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           repository: OttoStruve/muler_example_data
           path: tests/data
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -42,7 +42,7 @@ jobs:
           python -c "import astropy; print(f'astropy version: {astropy.__version__}')"
           pytest tests/test_phoenix.py
       - name: Test Precomputed
-        uses: nick-fields/retry@v2
+        uses: nick-fields/retry@v3
         with:
           timeout_seconds: 60
           max_attempts: 10