Update actions (#32)

* Improve docs

* Remove tests for deleted code

* Add dependabot updates

* fix version

.github/workflows/ci.yml

@@ -21,18 +21,18 @@ jobs:
     steps:
 
       - name: Checkout Code Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.9
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4.1.0
         with:
           python-version: 3.9
 
       # Run all pre-commit hooks on all the files.
       # Getting only staged files can be tricky in case a new PR is opened
       # since the action is run on a branch in detached head state
       - name: Install and Run Pre-commit
-        uses: pre-commit/action@v2.0.3
+        uses: pre-commit/action@v3.0.0
 
   # With no caching at all the entire ci process takes 4m 30s to complete!
   pytest:
@@ -61,7 +61,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Python 3.9
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4.1.0
         with:
           python-version: 3.9
 
@@ -71,7 +71,7 @@ jobs:
           echo "::set-output name=dir::$(pip cache dir)"
 
       - name: Cache pip Project Dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3.0.11
         with:
           # Get the location of pip cache dir
           path: ${{ steps.pip-cache-location.outputs.dir }}
@@ -89,4 +89,4 @@ jobs:
         run: coverage run -m pytest
 
       - name: Send coverage report to codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3