Update github actions versions

.github/workflows/unit_tests.yml

@@ -11,10 +11,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: 3.9
 
@@ -37,7 +37,7 @@ jobs:
         run: pytest --cov=./ --cov-report=xml
 
       - name: Upload test coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
 
       # Set the color of the slack message used in the next step based on the
       # status of the build: "danger" for failure, "good" for success,
@@ -52,7 +52,7 @@ jobs:
       # at the organization level and available to all repositories. Only run on
       # scheduled builds & pushes, since PRs automatically report to Slack.
       - name: Report status to Slack
-        uses: rtCamp/action-slack-notify@master
+        uses: rtCamp/action-slack-notify@v2
         if: ${{ always() && (github.event_name == 'schedule' || github.event_name == 'push') }}
         continue-on-error: true
         env: