Update main.yml

Author: skoobasteeve

.github/workflows/main.yml

@@ -23,9 +23,9 @@ jobs:
                   - os: macos-latest
                     python-version: "3.7"
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
             - name: Set up Python ${{ matrix.python-version }}
-              uses: actions/setup-python@v4
+              uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
               with:
                   python-version: ${{ matrix.python-version }}
                   cache: 'pip'
@@ -44,4 +44,4 @@ jobs:
                   black --check --diff .
             - name: Check with flake8
               run: |
-                  flake8 --show-source --statistics .
+                  flake8 --show-source --statistics .