build(deps): bump System.Drawing.Common from 9.0.2 to 9.0.3 in /src.csharp (#1958)

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src.csharp/AlphaTab/AlphaTab.csproj

@@ -27,7 +27,7 @@
     <ItemGroup>
         <PackageReference Include="AlphaSkia" Version="2.3.120"/>
         <PackageReference Include="Microsoft.CSharp" Version="4.7.0"/>
-        <PackageReference Include="System.Drawing.Common" Version="9.0.2"/>
+        <PackageReference Include="System.Drawing.Common" Version="9.0.3"/>
     </ItemGroup>
 
     <ItemGroup>