workaround: add recover to prevent panic in PDF outlink extractor

[yzqzss]

Just a workaround, as pdfcpu hasn't released a new version in a long time.

[yzqzss]

ohh, NOOO, I missed. They actually released a new version.

v0.11.1

[yzqzss]

let's revert the commit and upgrade to pdfcpu v0.11.1

[NGTmeaty]

ooooops. Will resolve 😅 no worries

[codecov-commenter]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.37%. Comparing base (d475a60) to head (dd5f432).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/pkg/postprocessor/extractor/pdf.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #565      +/-   ##
==========================================
- Coverage   56.44%   56.37%   -0.07%     
==========================================
  Files         132      132              
  Lines        6718     6721       +3     
==========================================
- Hits         3792     3789       -3     
- Misses       2549     2554       +5     
- Partials      377      378       +1     

Flag	Coverage Δ
e2etests	41.88% <0.00%> (-0.08%)	⬇️
unittests	29.01% <33.33%> (+<0.01%)	⬆️

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