Bump Microsoft.Bcl.HashCode from 1.1.1 to 6.0.0

Bumps [Microsoft.Bcl.HashCode](https://github.com/dotnet/maintenance-packages) from 1.1.1 to 6.0.0.
- [Commits](https://github.com/dotnet/maintenance-packages/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Bcl.HashCode
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/Equatable.Comparers/Equatable.Comparers.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-    <PackageReference Include="Microsoft.Bcl.HashCode" Version="1.1.1" />
+    <PackageReference Include="Microsoft.Bcl.HashCode" Version="6.0.0" />
   </ItemGroup>
 
 </Project>