Bump actions/checkout from 3 to 4 (#30)

* 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] <support@github.com>

* Fix(black)

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthijs van der Burgh <matthijs.van.der.burgh@vbti.nl>

.github/workflows/lint.yml

@@ -6,7 +6,7 @@ jobs:
   black:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: psf/black@stable
         with:
           options: "--check --color --diff"

catkin_tools_document/builders.py

@@ -129,7 +129,6 @@ def pydoctor(conf, package, deps, doc_deps, output_path, source_path, docs_build
 
 
 def epydoc(conf, package, deps, doc_deps, output_path, source_path, docs_build_path, job_env):
-
     epydoc_exe = which("epydoc")
     if epydoc_exe is None:
         # If epydoc is missing, fall back to pydoctor.

catkin_tools_document/document.py

@@ -246,7 +246,6 @@ def document_workspace(
 
     # Construct jobs
     for pkg_path, pkg in packages_to_be_documented:
-
         # Get actual execution deps
         deps = [p.name for _, p in get_cached_recursive_build_depends_in_workspace(pkg, packages_to_be_documented)]
         doc_deps = [