Leverage automatic signing by renaming to kzu.snk

It is still the original signing key just in case someone
depends on that.

Author: kzu

src/AssemblyFixture/AssemblyFixture.csproj

@@ -4,7 +4,6 @@
     <PackageId>xunit.assemblyfixture</PackageId>
     <RootNamespace>Xunit</RootNamespace>
     <AssemblyName>xunit.assemblyfixture</AssemblyName>
-    <AssemblyOriginatorKeyFile>..\xunit.assemblyfixture.snk</AssemblyOriginatorKeyFile>
     <PackageReadmeFile>readme.md</PackageReadmeFile>
     <PackageIconUrl>https://github.com/devlooped/xunit.assemblyfixture/raw/main/assets/img/xunit-purple.png</PackageIconUrl>
     <Description>