Revert package update of JetBrains.Annotations (#1755)

Author: bkoelman

Directory.Build.props

@@ -54,7 +54,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2025.2.*" PrivateAssets="All" />
+    <PackageReference Include="JetBrains.Annotations" Version="2024.3.*" PrivateAssets="All" />
     <PackageReference Include="CSharpGuidelinesAnalyzer" Version="3.8.*" PrivateAssets="All" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)CSharpGuidelinesAnalyzer.config" Visible="False" />
   </ItemGroup>