Update dompdf/dompdf requirement from ^2.0 to ^2.0 || ^3.0

[dependabot]

Updates the requirements on dompdf/dompdf to permit the latest version.

Release notes

Sourced from dompdf/dompdf's releases.

Dompdf 3.0.0

Release Highlights

• Adds support for CSS variables (custom properties)
• Adds support for CSS math functions (calc, max, round, etc.)
• Updates the font matching logic to select the appropriate character-supporting font from the styled font families

Additional Changes

• Improves stylesheet handling, including
  • enhanced regular expressions used during stylesheet parsing
  • enhanced media query handling that
    • supports media queries with more than one condition
    • expands logical operators support (not, or)
    • expands media query logic for at-import rules
  • improved value parsing related to case sensitivity
  • improved CSS function parsing and handling
• Improves table border rendering
• Improves automatic counter reset
• Improves compatibility with PDFLib version 10
• Improves security through
  • new "allowedRemoteHosts" option to restrict which remote hosts can be requested
  • new "artifactPathValidation" option to provide a mechanism for validating artifact paths (log file, temp directories, etc.)
  • SVG file reference recursion
• Adds support for rendering unknown input element types
• Fixes IMagick extension temporary directory usage
• Fixes transparency after transform when using the Cpdf backend

The full list of new features and addressed issues can be found in the release milestone. View all changes since the previous release in the commit history.

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We would like to extend our gratitude to the community members who helped make this release possible.

Requirements

Dompdf 3.0.x requires the following:

• PHP 7.1 or greater
  • MBString
  • GD (for image processing)
• masterminds/html5
• dompdf/php-font-lib
• dompdf/php-svg-lib

For full requirements and recommendations see the requirements page on the wiki.

Download Instructions

The dompdf team recommends that you use Composer for easier dependency management.

If you're not yet using Composer you can download a packaged release of dompdf which includes all the files you need to use the library. Click the link labeled "dompdf_3-0-0.zip" for the packaged release. The download options labeled "Source code" are auto-generated by github and do not include all the dependencies.

Commits

• fbc7c5e Bump version to 3.0.0
• 1fa8696 Update FontLib, SvgLib requirements
• e4b4b53 Capture deprecation notices during unit testing
• 12834cc Avoid deprecation notice when validating null artifact paths
• 1cbf771 Address GD compatibility issue when using PHP < 8.0.0
• e1899a4 FIX artifact path validation
• 3e665ec Support artifact path validation
• 0ed161b Increase SvgLib dependency to 0.5.2
• a30da03 Improve CSS variable inheritance
• 9c6228e Add multi-document parsing note to the README
• Additional commits viewable in compare view

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