Update workflow to contain proper versions

Author: craigthomas

.github/workflows/python-app.yml

@@ -1,4 +1,4 @@
-name: CodeCov
+name: Build Test Coverage
 on: [push, pull_request]
 jobs:
   run:
@@ -7,17 +7,15 @@ jobs:
       OS: ubuntu-latest
       PYTHON: '3.6.8'
     steps:
-    - uses: checkout@v2
-      with:
-        fetch-depth: ‘2’
-
+    - name: Checkout
+      uses: actions/checkout@v2.3.4
     - name: Setup Python
-      uses: actions/setup-python@master
+      uses: actions/setup-python@v2.2.2
       with:
         python-version: 3.6.8
     - name: Generate Report
       run: |
         pip install coverage
         coverage run -m unittest
-    - name: Upload Coverage to Codecov
-      uses: codecov/codecov-action@v1
+    - name: Codecov
+      uses: codecov/codecov-action@v1.5.2