chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
       uses: actions/setup-go@v5
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: test
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
       uses: actions/setup-go@v5

.github/workflows/check-binaries.yml

@@ -16,7 +16,7 @@ jobs:
         with:
           python-version: '3.14'
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: main
       - name: Download latest release

.github/workflows/integ-tests.yml

@@ -11,15 +11,15 @@ jobs:
     environment:
       name: integ-tests
     steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - name: run go tests
           run: make tests-with-docker
   integ-tests-x86:
     runs-on: ubuntu-latest
     environment:
       name: integ-tests
     steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - uses: actions/setup-python@v5
           with:
             python-version: '3.14'
@@ -30,7 +30,7 @@ jobs:
     environment:
       name: integ-tests
     steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - uses: actions/setup-python@v5
           with:
             python-version: '3.14'
@@ -41,7 +41,7 @@ jobs:
     environment:
       name: integ-tests
     steps:
-        - uses: actions/checkout@v4
+        - uses: actions/checkout@v6
         - uses: actions/setup-python@v5
           with:
             python-version: '3.14'

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
     environment: Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           ref: main
       - name: Set up python