Updated year

Author: FlorianRappl

src/AngleSharp.Css.nuspec

@@ -13,7 +13,7 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>Extends the CSSOM from the core AngleSharp library.</description>
     <releaseNotes>https://github.com/AngleSharp/AngleSharp.Css/blob/main/CHANGELOG.md</releaseNotes>
-    <copyright>Copyright 2016-2024, AngleSharp</copyright>
+    <copyright>Copyright 2016-2025, AngleSharp</copyright>
     <tags>html html5 css css3 dom styling library anglesharp angle</tags>
     <dependencies>
       <dependency id="AngleSharp" version="[1.0.0,2.0.0)" />