Target NET 8

Author: vadd98

src/Spectrogram/Spectrogram.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
         <Version>1.6.1</Version>
         <Description>A .NET Standard library for creating spectrograms</Description>
         <Authors>Scott Harden</Authors>