Bump actions/checkout from 2.7.0 to 4.2.2 (#30)

Author: dependabot[bot]

.github/workflows/flake8.yml

@@ -17,7 +17,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}

.github/workflows/py_compile.yml

@@ -20,7 +20,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}

.github/workflows/pytype.yml

@@ -17,7 +17,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2.7.0
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}