ci: Only run contracts tests on contracts changes

[mslipper]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.39%. Comparing base (aa4db40) to head (4ca4fee).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #17105      +/-   ##
===========================================
- Coverage    45.75%   45.39%   -0.36%     
===========================================
  Files         1478     1478              
  Lines       119949   119949              
===========================================
- Hits         54877    54455     -422     
- Misses       61226    61669     +443     
+ Partials      3846     3825      -21     

Flag	Coverage Δ
cannon-go-tests-64	66.97% <ø> (-0.73%)	⬇️
contracts-bedrock-tests	96.28% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.
see 16 files with indirect coverage changes

🚀 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.