Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/commits-signed.yaml

@@ -9,6 +9,6 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Check signed commits in PR
       uses: 1Password/check-signed-commits-action@v1

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ jobs:
       packages: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Go 1.25

.github/workflows/test.yaml

@@ -57,7 +57,7 @@ jobs:
           --health-retries 5
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -112,7 +112,7 @@ jobs:
           --health-retries 5
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -122,7 +122,7 @@ jobs:
           go-version: "1.25"
 
       - name: Checkout test plugin 🛎️
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: gatewayd-io/plugin-template-go
           path: plugin-template-go

.github/workflows/vulnerability-comparison.yaml

@@ -17,7 +17,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ env.SHA }}
       - name: Set short SHA

plugin/.template/project/{{ plugin_name }}/.github/workflows/commits-signed.yaml

@@ -9,6 +9,6 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Check signed commits in PR
       uses: 1Password/check-signed-commits-action@v1

plugin/.template/project/{{ plugin_name }}/.github/workflows/release.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Go 1.25