build(deps): bump coverlet.collector from 6.0.2 to 6.0.3 in /csharp/PhoneNumbers.Extensions.Test in the phonenumbers_extensions_test_minor_patch_updates group

build(deps): bump coverlet.collector from 6.0.2 to 6.0.3 in /csharp/PhoneNumbers.Extensions.Test in the phonenumbers_extensions_test_minor_patch_updates group #87