Bump actions/checkout from 2 to 3 (StoglRobotics#98)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

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

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

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

.github/workflows/ci-format.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: actions/setup-python@v4
       with:
         python-version: '3.9'

.github/workflows/ci-lint.yml

@@ -18,7 +18,7 @@ jobs:
           - linter: copyright
             arguments: "--exclude docs/conf.py"
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: ros-tooling/setup-ros@master
     - uses: ros-tooling/action-ros-lint@master
       with:

.github/workflows/docs-check-sphinx-pages.yml

@@ -13,7 +13,7 @@ jobs:
     name: Check Multiversion
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v4

.github/workflows/docs-deploy-sphinx-pages.yml

@@ -12,7 +12,7 @@ jobs:
     name: Deploy Multiversion
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         fetch-depth: 0
     - uses: actions/setup-python@v4