Bump coverlet.msbuild from 3.0.2 to 3.0.3 (#94)

Author: dependabot[bot]

test/Library.Tests/Library.Tests.csproj

@@ -9,7 +9,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.msbuild" Version="3.0.2" />
+    <PackageReference Include="coverlet.msbuild" Version="3.0.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="xunit" Version="2.4.1" />