bump libsignal to 2.5.10.9

Author: Trolldemorted

Signal-Windows/Signal-Windows.csproj

@@ -319,7 +319,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="libsignal-service-dotnet">
-      <Version>2.5.10.8</Version>
+      <Version>2.5.10.9</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.EntityFrameworkCore">
       <Version>1.1.2</Version>