Small fix for Orbiter v1.2.1

[fritz-astronomer]

• cicd: remove duplicate pre-commit check
• fix: pre-serialize dag dict for jq

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.07%. Comparing base (6092f76) to head (ecb0f64).
Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   90.95%   91.07%   +0.12%     
==========================================
  Files          13       13              
  Lines         431      437       +6     
==========================================
+ Hits          392      398       +6     
  Misses         39       39              

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