Bump LightningDB from 0.15.0 to 0.16.0 (#6960)

Bumps [LightningDB](https://github.com/CoreyKaylor/Lightning.NET) from 0.15.0 to 0.16.0.
- [Release notes](https://github.com/CoreyKaylor/Lightning.NET/releases)
- [Commits](CoreyKaylor/Lightning.NET@v0.15.0...v0.16.0)

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

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

src/contrib/cluster/Akka.DistributedData.LightningDB/Akka.DistributedData.LightningDB.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
         <AssemblyTitle>Akka.DistributedData.LightningDB</AssemblyTitle>
@@ -14,7 +14,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="LightningDB" Version="0.15.0"/>
+        <PackageReference Include="LightningDB" Version="0.16.0"/>
     </ItemGroup>
 
 </Project>