chg: ⬇️ downgrade pdfjs-dist to support older browser versions

[despprie]

PR Details

Motivation and Context

Some customers were having issue with the newer version of pdfjs-dist due to the fact that it uses Promise.withResolvers. This function is not supported in older versions of common browsers. We can still support electronic signatures with this version of the package.

How Has This Been Tested

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have added type hints (flow) to cover my changes.
• All new and existing tests passed.