fix: shorten test project

Apparently the filename for the csproj file was too long, forcing us to shorten it.

Author: ChristianHaase

ByteGuard.FileValidator.Extensions.DependencyInjection.slnx

@@ -7,7 +7,7 @@
     <File Path="README.md" />
   </Folder>
   <Folder Name="/tests/">
-    <Project Path="tests/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj" />
+    <Project Path="tests/FileValidator.Extensions.DependencyInjection.Tests.Unit/FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj" />
   </Folder>
   <Project Path="src/ByteGuard.FileValidator.Extensions.DependencyInjection/ByteGuard.FileValidator.Extensions.DependencyInjection.csproj" />
 </Solution>

…ns.DependencyInjection.Tests.Unit.csproj …ns.DependencyInjection.Tests.Unit.csprojtests/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj renamed to tests/FileValidator.Extensions.DependencyInjection.Tests.Unit/FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj tests/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit/ByteGuard.FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj renamed to tests/FileValidator.Extensions.DependencyInjection.Tests.Unit/FileValidator.Extensions.DependencyInjection.Tests.Unit.csproj

@@ -1,5 +1,4 @@
 using ByteGuard.FileValidator.Configuration;
-using ByteGuard.FileValidator.Extensions.DependencyInjection;
 using ByteGuard.FileValidator.Extensions.DependencyInjection.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;