Update passive_env_checker.py to fix "bool8 error"

[JilinJL]

fix the bool8 error
bool8 -> bool

I have tested the change and made sure it runs well

Description

Running the demo code in DemoCode export an error

Code example

import gym
env = gym.make("LunarLander-v2", render_mode="human")
env.action_space.seed(42)

observation, info = env.reset(seed=42)

for _ in range(1000):
    observation, reward, terminated, truncated, info = env.step(env.action_space.sample())

    if terminated or truncated:
        observation, info = env.reset()

env.close()

System Info

File "E:\learn.venv\Lib\site-packages\gym\utils\passive_env_checker.py", line 233, in env_step_passive_checker
if not isinstance(terminated, (bool, np.bool8)):
^^^^^^^^
File "E:\learn.venv\Lib\site-packages\numpy_init_.py", line 427, in getattr
raise AttributeError("module {!r} has no attribute "
AttributeError: module 'numpy' has no attribute 'bool8'. Did you mean: 'bool'?
libpng warning: iCCP: cHRM chunk does not match sRGB

Additional context
I edited the source code to ensure that the code can be run.Maybe there is a version problem here.

Checklist

• I have checked that there is no similar issue in the repo (required)
  In fact, there is a similar PR, but it seems to have expired

Fixes #3258 #3294

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Screenshots

Please attach before and after screenshots of the change if applicable.

Before ❌	After ✔

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• [x ] New and existing unit tests pass locally with my changes

[JilinJL]

As of 3.11.2025, the code works!

[pseudo-rnd-thoughts]

Hey, the dev team launched gymnasium, a fork of Gym by the maintainers where all maintenance and improvements will happen moving forward. Therefore, we are not updating or maintaining this repo anymore

[JilinJL]

Oh, My God. My first PR, BAD ENDING. sorry!