Relax kt-paperclip dependency

[adammathys]

Summary

We need to allow for kt-paperclip v8.0.0 which has some changes that allow us to support Rails 8.2

There are no deprecations in v8.0.0 that affect our code.

Checklist

Check out our PR guidelines for more details.

The following are mandatory for all PRs:

• I agree that my PR will be published under the same license as Solidus.
• I have written a thorough PR description.
• I have kept my commits small and atomic.
• I have localized any and all user-facing strings that I added to the source code.
• I have used clear, explanatory commit messages.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.26%. Comparing base (a301093) to head (a87079f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6571   +/-   ##
=======================================
  Coverage   92.26%   92.26%           
=======================================
  Files        1037     1037           
  Lines       21211    21211           
=======================================
  Hits        19570    19570           
  Misses       1641     1641           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.