Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build_and_test_humble.yaml

@@ -26,7 +26,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ros-tooling/[email protected]
         with:
           use-ros2-testing: true

.github/workflows/build_and_test_iron.yaml

@@ -26,7 +26,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ros-tooling/[email protected]
         with:
           use-ros2-testing: true

.github/workflows/build_and_test_rolling.yaml

@@ -26,7 +26,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ros-tooling/[email protected]
         with:
           use-ros2-testing: true