chore(deps): update dependency minicover to v3

Author: renovate[bot]

src/PSKubectl.csproj

@@ -13,6 +13,6 @@
             <PrivateAssets>All</PrivateAssets>
         </PackageReference>
         <!-- <PackageReference Include="Serilog.Extensions.Logging.File" Version="1.1.0" /> -->
-        <DotNetCliToolReference Include="MiniCover" Version="2.0.0-ci-20180315091931" />
+        <DotNetCliToolReference Include="MiniCover" Version="3.6.0" />
     </ItemGroup>
 </Project>