MO-Gymnasium 1.3.0 Release: New Mujoco v5 Environments

This release adds the new Mujoco v5 environments:

• mo-ant-v5
• mo-ant-2obj-v5
• mo-hopper-v5
• mo-hopper-2obj-v5
• mo-walker2d-v5
• mo-halfcheetah-v5
• mo-humanoid-v5
• mo-swimmer-v5

What's Changed

• Add Mujoco v5 environments by @LucasAlegre in #85
• Add Python 3.12 support by @ffelten in #108
• Remove pymoo dep by @ffelten in #109

Full Changelog: v1.2.0...v1.3.0