pdfjs 2.12.9

Dart bindings for Mozilla's PDF.js library

2.12.9

• Updating CHANGELOG.md

2.12.8

• GHA Dependency update for publish package
• Cleanup unused build files

2.12.7

• Addressing pub publish warnings

2.12.6

• Init CHANGELOG.md

2.12.3

• Workaround a vulnerability in older versions of pdfjs (<4.2.67) by hard-coding isEvalSupported to false