Update GH actions (#406)

Author: jarrodmillman

.github/workflows/test.yml

@@ -15,10 +15,10 @@ jobs:
         python-version: ["3.7", "3.8", "3.9", "3.10"]
         sphinx-version: ["sphinx==3.0", "sphinx==4.0", "sphinx>4.4"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Python setup
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -72,10 +72,10 @@ jobs:
         python-version: ["3.11-dev"]
         sphinx-version: ["sphinx==4.0", "sphinx==4.5"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Python setup
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -115,10 +115,10 @@ jobs:
         os: [ubuntu]
         python-version: ["3.9", "3.10"]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Python setup
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}