ci: Ensure that std-lib version matches forc version

[sdankel]

Description

Sway std library will be released when forc is released. To keep it simple, we'll ensure that the version of sway std matches the version of forc. This PR adds a CI step to enforce this.

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[IGI-111]

The step likely needs to be added to verification-complete or this will be purely informative and not enforced.