chore(deps-dev): bump briefcase from 0.4.1 to 0.4.2

Bumps [briefcase](https://github.com/beeware/briefcase) from 0.4.1 to 0.4.2.
- [Release notes](https://github.com/beeware/briefcase/releases)
- [Commits](beeware/briefcase@v0.4.1...v0.4.2)

---
updated-dependencies:
- dependency-name: briefcase
  dependency-version: 0.4.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -47,7 +47,7 @@ dev = [
     "pyside6-stubs>=6.7.3.0",
     "towncrier>=24.8.0",
 ]
-build = ["briefcase>=0.3.26"]
+build = ["briefcase>=0.4.2"]
 docs = [
     "sphinx>=9.0.4",
     "sphinx-rtd-theme>=3.1.0",