Extend regex to match DAVx5
Extend regex to match DAVx5

https://gitlab.com/bitfireAT/davx5-ose/commit/7ce739c271f9b4f9b3cd7c16c526a774a7d99bdc
Signed-off-by: Daniel Kesselberg <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@danielkesselberg.de>

andreas-p/nextcloud-server,andreas-p/nextcloud-server,andreas-p/nextcloud-server,nextcloud/server,andreas-p/nextcloud-server,nextcloud/server,andreas-p/nextcloud-server,nextcloud/server,nextcloud/server