* Rebuild for buster-security.
+ Fixes CVE-2021-30858.
* debian/patches/force-single-process.patch:
+ Force the single-process mode in Evolution and Geary
* debian/control:
+ Remove Breaks for Evolution < 3.34.1.
+ Remove build dependency on libwpebackend-fdo-1.0-dev and
libmanette-0.2-dev.
+ Switch build dependency from libenchant-2-dev to libenchant-dev.
+ Switch build dependencies on libgl-dev and libgles-dev with
libgl1-mesa-dev and libgles2-mesa-dev.
* Downgrade xdg-desktop-portal-gtk from a recommendation to a
suggestion (See #989307)
* debian/rules:
+ Build with -DENABLE_GAMEPAD=OFF (as libmanette is missing).