curl: Update to version 7.86.0

curl: Update to version 7.86.0

- Update from version 7.84.0 to 7.86.0
- Update of rootfile
- curl-7.84.0-easy_lock_h_include_sched_h_if_available_to_fix_build.patch removed as this
   is now built into the source tarball version
- Changelog - is too large to inclkude here. The details can be found in the RELEASE_NOTES
   file in the source tarballs.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>