Totara changes:

* all fonts are included - there will be hopefully admin setting for font selection soon
* extra fallback fonts added
* latest version at the time of release - we need things like SVG support and any bug fixes we can get
* do not forget to update core thirdpartylibs.xml
* fixed the test page http://127.0.0.1/lib/tests/other/pdflibtestpage.php to say Totara
* TL-37450: upgraded to 6.6.2 & removed our php8.1 patches
* TL-40273: upgraded to 6.7.5
* TL-42641: upgraded to 6.7.6
* TL-43090: upgraded to 6.8.0

Important:

A new version of the library is being developed. See https://github.com/tecnickcom/tc-lib-pdf

Extra patches:

* TL-10313: support for inline SVG images in TCPDF::openHTMLTagHandler()

Petr Skoda
