Bump Bullseye from 5.0.0 to 6.0.0 (#2153)

---
updated-dependencies:
- dependency-name: Bullseye
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -42,7 +42,7 @@
   <!-- Build -->
   <ItemGroup>
     <PackageVersion Include="Argu" Version="6.2.5" />
-    <PackageVersion Include="Bullseye" Version="5.0.0" />
+    <PackageVersion Include="Bullseye" Version="6.0.0" />
     <PackageVersion Include="Proc.Fs" Version="0.9.1" />
     <PackageVersion Include="Fake.Tools.Git" Version="6.1.3" />
     <PackageVersion Include="Fake.IO.Zip" Version="6.1.3" />