build(deps): bump actions/checkout from 5 to 6 (#7095)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/1_create_release_pr.yml

@@ -34,7 +34,7 @@ jobs:
         uses: cylc/release-actions/stage-1/sanitize-inputs@v1
 
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ env.BASE_REF }}
           fetch-depth: 0  # need to fetch all commits to check contributors

.github/workflows/2_auto_publish_release.yml

@@ -33,7 +33,7 @@ jobs:
     steps:
 
     - name: Checkout repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: ${{ env.MERGE_SHA }}
 

.github/workflows/bash.yml

@@ -55,7 +55,7 @@ jobs:
       IMAGE: 'ghcr.io/cylc/cylc-bash-testing-2:master'
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run Docker container
         run: |

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
         python: ['3.12', '3']
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup Python
         uses: mamba-org/setup-micromamba@v2

.github/workflows/shortlog.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0  # need to fetch all commits to check contributors
           ref: ${{ github.event.pull_request.head.sha }}

.github/workflows/test_conda-build.yml

@@ -37,7 +37,7 @@ jobs:
       PIP_NO_DEPS: True
     steps:
       - name: checkout cylc-flow
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: modify conda env file
         run: |

.github/workflows/test_fast.yml

@@ -40,7 +40,7 @@ jobs:
       PYTEST_ADDOPTS: --cov --cov-append -n 5 --color=yes
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install System Dependencies
         uses: mamba-org/setup-micromamba@v2
@@ -116,7 +116,7 @@ jobs:
       FORCE_COLOR: 2
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install System Dependencies
         uses: mamba-org/setup-micromamba@v2
@@ -159,7 +159,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download coverage artifacts
         uses: actions/download-artifact@v6

.github/workflows/test_functional.yml

@@ -106,7 +106,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Configure Python
         uses: mamba-org/setup-micromamba@v2
@@ -337,7 +337,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download coverage artifacts
         uses: actions/download-artifact@v6

.github/workflows/test_tutorial_workflow.yml

@@ -44,7 +44,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install docs/tutorial dependencies
         uses: cylc/cylc-doc/.github/actions/install-dependencies@master

.github/workflows/update_copyright.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
 
     - name: Checkout repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Configure git
       uses: cylc/release-actions/configure-git@v1