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

Author: renovate[bot]

.github/workflows/actionlint.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Download actionlint
         id: get_actionlint
         run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)

.github/workflows/bashate.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: 3.14

.github/workflows/benchmark.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'zulu'

.github/workflows/codecov.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'

.github/workflows/copyrights.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: yegor256/copyrights-action@0.0.12
         with:
           globs: >-

.github/workflows/deep.yml

@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-24.04
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'zulu'

.github/workflows/docker.yml

@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: |
           docker build \
             --build-arg "PHINO_VERSION=$(cat src/main/resources/org/eolang/hone/default-phino-version.txt)" \

.github/workflows/hadolint.yml

@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: hadolint/hadolint-action@v3.3.0
         with:
           dockerfile: src/main/resources/org/eolang/hone/scaffolding/Dockerfile

.github/workflows/make.yml

@@ -14,7 +14,7 @@ jobs:
   make:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'zulu'

.github/workflows/markdown-lint.yml

@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: DavidAnson/markdownlint-cli2-action@v21.0.0