Update RestrictedPython to 8.0

[cdce8p]

Proposed change

https://github.com/zopefoundation/RestrictedPython/blob/8.0/CHANGES.rst

Ref: CVE-2025-22153
Fixes https://github.com/home-assistant/core/security/dependabot/76
Fixes https://github.com/home-assistant/core/security/dependabot/77

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
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• Link to frontend pull request:

Checklist

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