minor edit - bump gh actions versions

.github/workflows/build.yml

@@ -7,14 +7,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: '3.9'
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install -U pip
         pip install -r requirements.txt
     - name: Test
       run: |