and update pointer to macOS native Bulletsim lib

bin/OpenSim.Region.PhysicsModule.BulletS.dll.config

@@ -1,6 +1,6 @@
 <configuration>
   <dllmap os="windows" cpu="x86-64" dll="BulletSim" target="lib64/BulletSim-3.26-20231207-x86_64.dll" />
-  <dllmap os="osx" dll="BulletSim" target="lib64/libBulletSim.dylib" />
+  <dllmap os="osx" dll="BulletSim" target="lib64/libBulletSim-3.26-20231203-universal.dylib" />
   <dllmap os="!windows,osx" cpu="x86-64" dll="BulletSim" target="lib64/libBulletSim-2.86-20170903-x86_64.so" />
   <dllmap os="!windows,osx" cpu="arm64" dll="BulletSim" target="lib64/libBulletSim-arm64.so" />
 </configuration>