🌱 bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/apidiff.yml

@@ -13,7 +13,7 @@ jobs:
     if: (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository)
     steps:
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Go

.github/workflows/lint.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           go-version: '~1.20'
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Run linter
         uses: golangci/golangci-lint-action@v3
         with:
@@ -27,6 +27,6 @@ jobs:
   yamllint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run yamllint make target
         run: make yamllint

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Fetch all tags

.github/workflows/testdata.yml

@@ -14,7 +14,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Go
         uses: actions/setup-go@v4
         with:

.github/workflows/unit-tests-legacy.yml

@@ -19,7 +19,7 @@ jobs:
     if: (github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository)
     steps:
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Go
         uses: actions/setup-go@v4
         with:

.github/workflows/unit-tests.yml

@@ -18,7 +18,7 @@ jobs:
     if: (github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository)
     steps:
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
@@ -48,7 +48,7 @@ jobs:
     if: (github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository)
     steps:
       - name: Clone the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Go
         uses: actions/setup-go@v4
         with: