chore: bump katana

[enitrat]

Time spent on this PR:

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Resolves #

What is the new behavior?

• Update Katana to 1.0-alpha.6 so that 2.7 contracts are accepted.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.08%. Comparing base (35b4db5) to head (3f002ef).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1362   +/-   ##
=======================================
  Coverage   64.08%   64.08%           
=======================================
  Files          52       52           
  Lines        9060     9060           
=======================================
  Hits         5806     5806           
  Misses       3254     3254           

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