feat: change minimum age to 12

[DanonymousCoder]

Fixes Issue

My PR closes #634

👨‍💻 Changes proposed(What did you do ?)

change minimum age to 12

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• [X] My code follows the code style of this project.
• [X] This PR does not contain plagiarized content.
• [X] The title and description of the PR is clear and explains the approach.

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