chore: release userscript 2.12.1

[github-actions[bot]]

:robot: I have created a release

2.12.1 (2023-06-15)

Bug Fixes

• fix checkbox style (e1b41c9)
• update zhile.io API to fakegpt (2723554)

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[github-actions[bot]]

:robot: Release is at https://github.com/pionxzh/chatgpt-exporter/releases/tag/userscript-v2.12.1 :sunflower: