Updated SourceLink to 2.7.6

Author: devlead

src/LitJson/LitJSON.csproj

@@ -11,9 +11,9 @@
   </PropertyGroup>
 
   <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
-    <PackageReference Include="SourceLink.Create.GitHub" Version="2.1.0" PrivateAssets="All" />
-    <DotNetCliToolReference Include="dotnet-sourcelink-git" Version="2.1.0" />
-    <DotNetCliToolReference Include="dotnet-sourcelink" Version="2.1.0" />
+    <PackageReference Include="SourceLink.Create.GitHub" Version="2.7.6" PrivateAssets="All" />
+    <DotNetCliToolReference Include="dotnet-sourcelink-git" Version="2.7.6" />
+    <DotNetCliToolReference Include="dotnet-sourcelink" Version="2.7.6" />
   </ItemGroup>
 
   <PropertyGroup>