Use the newer SixLabors version

Author: Suiram1701

WebUntisAPI.Client/WebUntisAPI.Client.csproj

@@ -36,8 +36,8 @@
 
   <ItemGroup>
 	  <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-	  <PackageReference Condition="'$(TargetFramework)' == 'net6.0' or '$(TargetFramework)' == 'net7.0'" Include="SixLabors.ImageSharp" Version="3.0.1" />
-	  <PackageReference Condition="'$(TargetFramework)' == 'net6.0' or '$(TargetFramework)' == 'net7.0'" Include="SixLabors.ImageSharp.Drawing" Version="1.0.0" />
+	  <PackageReference Condition="'$(TargetFramework)' == 'net6.0' or '$(TargetFramework)' == 'net7.0'" Include="SixLabors.ImageSharp" Version="3.0.2" />
+	  <PackageReference Condition="'$(TargetFramework)' == 'net6.0' or '$(TargetFramework)' == 'net7.0'" Include="SixLabors.ImageSharp.Drawing" Version="2.0.0" />
 	  <PackageReference Condition="'$(TargetFramework)' == 'net47' or '$(TargetFramework)' == 'net481'" Include="System.Net.Http" Version="4.3.4" />
   </ItemGroup>