fix: adjust benfen to blind signing & bootloader version upgrade

[guowei0105]

adjust benfen to blind signing & bootloader version upgrade

Summary by CodeRabbit

• Chores
  • Updated minor version numbers to mark a new release.
• Refactor
  • Streamlined the transaction signing process by simplifying the confirmation workflow for improved efficiency.

[coderabbitai]

Walkthrough

This pull request makes two main updates. In the bootloader version file, the minor version numbers are incremented. In the sign transaction logic, extensive validation and parsing steps were removed. The function now directly confirms blind signing and computes the transaction digest.

Changes

Files	Change Summary
core/embed/bootloader/version.h	Updated VERSION_MINOR and FIX_VERSION_MINOR constants from 6 to 7.
core/src/apps/benfen/sign_tx.py	Removed detailed coin type checks, Unicode error handling, and transaction parsing; now directly calls blind sign confirmation and returns a digest.

✨ Finishing Touches

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[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 65d16a4 and ee9ef23.

📒 Files selected for processing (2)

• core/embed/bootloader/version.h (1 hunks)
• core/src/apps/benfen/sign_tx.py (1 hunks)

✅ Files skipped from review due to trivial changes (1)

• core/embed/bootloader/version.h

⏰ Context from checks skipped due to timeout of 90000ms (3)

• GitHub Check: Gen check
• GitHub Check: Style check
• GitHub Check: Defs check