Bump actions/checkout from 5 to 6

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]>

Author: dependabot[bot]

.github/workflows/check_links.yml

@@ -10,7 +10,7 @@ jobs:
   check_links:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Restore lychee cache
         id: restore-cache
         uses: actions/cache/restore@v4

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
             PROGRAM_FOLDER: 'tests/resources/dockerursim/programs/polyscopex'
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: start ursim
         run: |
           scripts/start_ursim.sh -m $ROBOT_MODEL -v $URSIM_VERSION -p $PROGRAM_FOLDER -d
@@ -109,7 +109,7 @@ jobs:
   test_start_ursim:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: '3.3'  # Not needed with a .ruby-version, .tool-versions or mise.toml

.github/workflows/industrial-ci.yml

@@ -35,7 +35,7 @@ jobs:
     env:
       DOCKER_RUN_OPTS: '-v /var/run/docker.sock:/var/run/docker.sock --network ursim_net'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: docker network create --subnet=192.168.56.0/24 ursim_net
         if: ${{ !env.ACT }}
       - uses: 'ros-industrial/industrial_ci@master'

.github/workflows/pre-commit.yml

@@ -15,7 +15,7 @@ jobs:
     name: pre-commit
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
         python-version: 3.10.4

.github/workflows/prerelease.yml

@@ -26,7 +26,7 @@ jobs:
             OS_VERSION: noble
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: sudo apt-get install -y python3-pip
       - run: sudo pip3 install empy==3.3.4  # Added as bloom not yet support empy v4
       - run: sudo pip3 install bloom rosdep

.github/workflows/sphinx_build.yml

@@ -17,7 +17,7 @@ jobs:
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           cache: 'pip'

.github/workflows/win-build.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: windows-2022
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: configure
         run: mkdir build && cd build && cmake .. -DBUILDING_TESTS=1
         #run: mkdir build && cd build && cmake .. -DBUILDING_TESTS=1 -DINTEGRATION_TESTS=1