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

Author: renovate[bot]

.github/workflows/bench-tests.yml

@@ -13,7 +13,7 @@ jobs:
     name: Run benchmark tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod

.github/workflows/clean_dockerhub_images.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6

.github/workflows/docs-pages.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.repository.default_branch }}
           persist-credentials: false

.github/workflows/docs-pr.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
           fetch-depth: 0

.github/workflows/extended-ci-longevity-large-partitions-with-network-nemesis-1h-test.yml

@@ -19,13 +19,13 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Check out the scylla-bench repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: scylladb/scylla-bench
           path: scylla-bench
 
       - name: Checkout GoCQL PR Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.ref }}

.github/workflows/main.yml

@@ -24,7 +24,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/cache@v4
         with:
@@ -65,7 +65,7 @@ jobs:
     env:
       SCYLLA_VERSION: ${{ matrix.scylla-version }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with:
@@ -129,7 +129,7 @@ jobs:
       CASSANDRA_VERSION: ${{ matrix.cassandra-version }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v6
         with: