feat: support for mn2pdf 1.97

[maxirmx]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 76.92308% with 3 lines in your changes missing coverage. Please review.

Project coverage is 84.45%. Comparing base (6fe3d0e) to head (bafb312).
Report is 1 commits behind head on main.

Files	Patch %	Lines
lib/tebako-runtime/adapters/mn2pdf.rb	72.72%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
- Coverage   85.40%   84.45%   -0.95%     
==========================================
  Files          12       12              
  Lines         185      193       +8     
==========================================
+ Hits          158      163       +5     
- Misses         27       30       +3     

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