docs: Owned Proxy audit report

[K1-R1]

Type of change

• Documentation

Changes

The following changes have been made:

• Added documentation referencing the Owned Proxy's audit report.
• Added the Owned Proxy's audit report.
• Bumps the forc toolchain channel, fuel-core and fuels-rs to allow CI to pass.

Related Issues

Closes #16

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.
• 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.
• I have updated the changelog to reflect the changes on this PR.