build(deps): bump coverlet.collector from 3.0.2 to 3.0.3

Bumps [coverlet.collector](https://github.com/coverlet-coverage/coverlet) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](https://github.com/coverlet-coverage/coverlet/commits)

Signed-off-by: dependabot[bot] <support@github.com>

test/Plugins.Tests/McMaster.NETCore.Plugins.Tests.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="McMaster.Extensions.Xunit" Version="0.1.0" />
-    <PackageReference Include="coverlet.collector" Version="3.0.2" />
+    <PackageReference Include="coverlet.collector" Version="3.0.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />