Bump actions/checkout from 2 to 4

.github/workflows/codeql-analysis.yaml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/deploy.yaml

@@ -22,7 +22,7 @@ jobs:
     needs: unit-test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - uses: 18F/identity-idva-cf-setup@v2
         id: cf-setup

.github/workflows/python-checks.yaml

@@ -19,7 +19,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
         with:
           python-version: '3.9'
@@ -29,7 +29,7 @@ jobs:
   bandit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
         with:
           python-version: '3.9'

.github/workflows/unit-tests.yaml

@@ -14,7 +14,7 @@ jobs:
   unit-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/cache@v2
         with:
           path: ~/.cache/pip