Synchronize skill-card versions in update-version.sh

[coderabbitai]

Summary

Update update-version.sh so release version updates also synchronize each published skill card version with its SKILL.md frontmatter.

Rationale

The 26.10 release update changed skills/cuopt-routing-api-python/SKILL.md to 26.10.00, but the corresponding skill-card.md was not updated. This work is outside the current release PR scope and should be automated in the release process.

Affected areas

• update-version.sh
• skills/**/SKILL.md
• Corresponding published skill-card.md files

Acceptance criteria

• update-version.sh updates the version reported by each applicable skill-card.md.
• The generated skill-card version matches the associated SKILL.md frontmatter version.
• Add or update automated coverage for this behavior where the repository supports it.
• Document any skill directories that intentionally do not have a published skill card.

References

• Release PR: Update to 26.10.00 #1666
• Review comment: Update to 26.10.00 #1666 (comment)
• Requested by: @gforsyth