Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
           go-version: ${{ matrix.go-version }}
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # cache go modules
       - uses: actions/cache@v3

.github/workflows/release.yaml

@@ -19,7 +19,7 @@ jobs:
       IMAGE_NAME: ${{ github.repository }}
     steps:
       - name: Checkout
-        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
         with:
           fetch-depth: 0
       - name: Git Fetch

.github/workflows/semgrep.yaml

@@ -12,7 +12,7 @@ jobs:
     if: (github.actor != 'dependabot[bot]')
     steps:
       # Fetch project source
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: returntocorp/semgrep-action@v1
         with: