(deps): Bump Cake.Frosting from 4.0.0 to 4.2.0 in /build

Bumps [Cake.Frosting](https://github.com/cake-build/cake) from 4.0.0 to 4.2.0.
- [Release notes](https://github.com/cake-build/cake/releases)
- [Changelog](https://github.com/cake-build/cake/blob/develop/ReleaseNotes.md)
- [Commits](cake-build/cake@v4.0.0...v4.2.0)

---
updated-dependencies:
- dependency-name: Cake.Frosting
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build/Directory.Packages.props

@@ -6,7 +6,7 @@
     <PackageVersion Include="Cake.Compression" Version="0.3.0" />
     <PackageVersion Include="Cake.Codecov" Version="3.0.0" />
     <PackageVersion Include="Cake.Coverlet" Version="4.0.1" />
-    <PackageVersion Include="Cake.Frosting" Version="4.0.0" />
+    <PackageVersion Include="Cake.Frosting" Version="4.2.0" />
     <PackageVersion Include="Cake.Frosting.Git" Version="4.0.0" />
     <PackageVersion Include="Cake.Http" Version="4.0.0" />
     <PackageVersion Include="Cake.Incubator" Version="8.0.0" />