2025-01-02 Amplify JS release - aws-amplify@6.12.0

What's Changed

• chore: Merge release into main by @aws-amplify-ops in #14094
• fix(core): amplify configure with storage path type issue by @ashwinkumar6 in #14088
• chore(auth): update auth error message and description by @joon-won in #14098
• feat(api): add custom endpoint support to API by @svidgen in #14086
• feat(auth): proactive token refresh by @jjarvisp in #14076
• fix(auth): fall back to user agent if deviceName resolves to empty st… by @cshfang in #14102
• release(required): Amplify JS release by @AllanZhengYP in #14108

Full Changelog: https://github.com/aws-amplify/amplify-js/compare/aws-amplify@6.11.0...aws-amplify@6.12.0