Fix and add tests for requireBody() and requireNoBody()

[fpseverino]

These changes are now available in 1.11.1

Issue #123

• Fix and add tests for requireBody() and requireNoBody()

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.92%. Comparing base (f6a08a1) to head (0fc88ff).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
- Coverage   82.09%   81.92%   -0.18%     
==========================================
  Files          25       25              
  Lines        2603     2517      -86     
==========================================
- Hits         2137     2062      -75     
+ Misses        466      455      -11     

Files with missing lines	Coverage Δ
Sources/LeafKit/LeafSerialize/LeafContext.swift	93.33% <100.00%> (+49.58%)	⬆️

... and 17 files with indirect coverage changes

[0xTim]

Thanks!