Fix flake tests

[johnfercher]

Description

Related Issue

• fix flake tests on MacBook

Checklist

check with "x", if applied to your change

• All methods associated with structs has func (s *struct) method() {} name style.
• Wrote unit tests for new/changed features.
• Updated docs/doc.go
• Updated pkg/pdf/example_test.go
• Updated README.md
• Updated all examples inside internal/examples
• New public methods/structs/interfaces has comments upside them explaining they responsibilities
• Executed make dod with none issues pointed out by golangci-lint and goreportcard-cli

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (2cafb63) 35.85% compared to head (28f8441) 35.85%.

Additional details and impacted files

@@           Coverage Diff           @@
##               v2     #333   +/-   ##
=======================================
  Coverage   35.85%   35.85%           
=======================================
  Files          42       42           
  Lines        1445     1445           
=======================================
  Hits          518      518           
  Misses        908      908           
  Partials       19       19           

Flag	Coverage Δ
unittests	35.85% <ø> (ø)

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