chore(deps): update actions/checkout action to v4 (#603)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/pr-checks.yml

@@ -42,7 +42,7 @@ jobs:
           key: ${{ runner.os }}-${{ env.cache-name }}-${{ hashFiles('**/go.sum') }}
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Unit Test
         run: make unit-test
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up QEMU
         uses: docker/setup-qemu-action@master
         with:
@@ -105,7 +105,7 @@ jobs:
         with:
           go-version: ${{ env.DEFAULT_GO_VERSION }}
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download image
         uses: actions/download-artifact@v3
         with:

.github/workflows/release-please.yml

@@ -47,7 +47,7 @@ jobs:
     if: ${{ needs.release-please.outputs.release_created }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ needs.release-please.outputs.release_tag_name }}
 
@@ -113,7 +113,7 @@ jobs:
     if: ${{ needs.release-please.outputs.release_created }}
     steps:
         - name: Checkout
-          uses: actions/checkout@v3
+          uses: actions/checkout@v4
           with:
             ref: ${{ needs.release-please.outputs.release_tag_name }}
 
@@ -148,7 +148,7 @@ jobs:
     if: ${{ needs.release-please.outputs.release_created }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           ref: ${{ env.GITHUB_PAGES_BRANCH }}

.github/workflows/validate-crd-docs.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Cache build tools
         id: cache-build-tools

.github/workflows/validate-helm-docs.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Node
         uses: actions/setup-node@v3.8.1