[diffusion] Fix the version of lightning and colossalai in Stable Diffusion envir…

[Camille7777]

…onment requirement

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🚨 Issue number

closes #2938

📝 What does this PR do?

1. Modify the README of stable diffusion
2. Fix the version of pytorch lightning&lightning and colossalai version to enable codes running successfully.

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• I have performed a self-review of my code
• I have added thorough tests.
• I have added docstrings for all the functions/methods I implemented

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[binmakeswell]

Hi @Camille7777 Thank you very much for your contribution!