build(deps): update actions/checkout action to v4 [skip ci]

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

.github/workflows/auto-update-keptn-spec.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Extract spec tag
         run: echo "SPEC_TAG=${SPEC_REF#refs/tags/}" >> $GITHUB_ENV

.github/workflows/pre-release.yml

@@ -40,7 +40,7 @@ jobs:
           fi
 
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -89,7 +89,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Test
         run: go test -race -v ./...
   pre-release:
@@ -98,7 +98,7 @@ jobs:
     needs: [ prepare, test ]
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.KEPTN_BOT_TOKEN }}

.github/workflows/release.yml

@@ -39,7 +39,7 @@ jobs:
           fi
 
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -86,7 +86,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Test
         run: go test -race -v ./...
   release:
@@ -95,7 +95,7 @@ jobs:
     needs: [ prepare, test ]
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           token: ${{ secrets.KEPTN_BOT_TOKEN }}

.github/workflows/reviewdog.yml

@@ -14,7 +14,7 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
         id: go
       - name: Check out code.
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: reviewdog-action
         uses: reviewdog/[email protected]

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Test
         run: go test -race -coverprofile=coverage.txt -covermode=atomic -v ./...
       - name: Report test coverage