search_api_attachments 8.x-1.0-beta17

This is D8/D9 beta17 release of search_api_attachments module.

This module depends on search_api that is stable, but search_api_attachments is not yet stable and so not recommended to use in production.

Especially, note that there is no data update path for this module's configuration!

This release :

Fixes one bug and adds one feature.
The bug concerns character limit bypassing for text files
The feature is making it optional for tet files to be extracted by teh extraction method used or just be read with php's file_get_contents()

Main notable commits since beta16 version :

* Issue #3165854 by jessehs, Berdir, izus, acouch: Non UTF-8 text files can break indexing
* Issue #3192799 by acouch, izus: Text files extraction bypasses character limit