Update GitHub Actions workflow

.github/workflows/build.yml

@@ -1,20 +1,20 @@
 name: Build
 
-on: [push]
+on: push
 
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    name: Build
     steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v1
-      with:
-        python-version: 3.8
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt --no-deps
-    - name: Run unit tests
-      run: ./run_unit_tests.sh
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt --no-deps
+      - name: Run unit tests
+        run: ./run_unit_tests.sh