Bump FsUnit and NUnit

Bumps FsUnit from 5.6.0 to 7.1.1
Bumps NUnit to 4.0.1, 4.5.1

---
updated-dependencies:
- dependency-name: FsUnit
  dependency-version: 7.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: NUnit
  dependency-version: 4.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: NUnit
  dependency-version: 4.5.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -19,8 +19,8 @@
     <PackageVersion Include="System.Memory" Version="4.5.5" />
     <PackageVersion Include="System.Text.Json" Version="10.0.5" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.7.0" />
-    <PackageVersion Include="NUnit" Version="3.14.0" />
-    <PackageVersion Include="FsUnit" Version="5.6.0" />
+    <PackageVersion Include="NUnit" Version="4.5.1" />
+    <PackageVersion Include="FsUnit" Version="7.1.1" />
     <PackageVersion Include="FSharp.Data" Version="8.1.3" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />