* [MM-63434] Use forked PDF library with parsing depth limit (#35947)
* [MM-63434] Use forked PDF library with parsing depth limit
Replace github.com/ledongthuc/pdf with a fork that limits object
nesting depth during parsing. Add test coverage.
* Reverting incorrect merge that lost the change to msgpack
The error was in merge 64bdff88d8
* Remove stale ledongthuc/pdf checksums after fork replace (go mod tidy)
* Fix TestPdfFile expected text for forked PDF extractor (release-10.11)
The jgheithcock/pdf fork returns a leading newline for sample-doc.pdf; align
with master and 11.x cherry-picks.
It was a good decision in hindsight to keep the public module as 0.x
because this would have been a breaking change again.
https://mattermost.atlassian.net/browse/MM-53032
```release-note
Changed the Go module path from github.com/mattermost/mattermost-server/server/v8 to github.com/mattermost/mattermost/server/v8.
For the public facing module, it's path is also changed from github.com/mattermost/mattermost-server/server/public to github.com/mattermost/mattermost/server/public
```
