chore: add missing keepachangelog task

Author: AngelMunoz

src/Mibo.Raylib/Mibo.Raylib.fsproj

@@ -64,4 +64,8 @@
     <PackageReference Include="Raylib-cs" Version="8.0.0" />
     <PackageReference Include="FSharp.UMX" Version="1.1.0" />
   </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Ionide.KeepAChangelog.Tasks" Version="0.3.3" PrivateAssets="all" />
+  </ItemGroup>
 </Project>