Bump CakeContrib.Guidelines from 1.4.0 to 1.5.1 in /Source

Bumps [CakeContrib.Guidelines](https://github.com/cake-contrib/CakeContrib.Guidelines) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/cake-contrib/CakeContrib.Guidelines/releases)
- [Changelog](https://github.com/cake-contrib/CakeContrib.Guidelines/blob/develop/GitReleaseManager.yaml)
- [Commits](cake-contrib/CakeContrib.Guidelines@1.4.0...1.5.1)

---
updated-dependencies:
- dependency-name: CakeContrib.Guidelines
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Source/Cake.Codecov/Cake.Codecov.csproj

@@ -36,7 +36,7 @@
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
         <PackageReference Include="Cake.Core" Version="3.0.0" PrivateAssets="All" />
-        <PackageReference Include="CakeContrib.Guidelines" Version="1.4.0" PrivateAssets="All" />
+        <PackageReference Include="CakeContrib.Guidelines" Version="1.5.1" PrivateAssets="All" />
         <PackageReference Include="JetBrains.Annotations" Version="2023.3.0" PrivateAssets="All" />
         <PackageReference Include="Roslynator.Analyzers" Version="4.12.2">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>