Update supported server versions

Signed-off-by: Felix Weilbach <felix.weilbach@nextcloud.com>

VERSION.cmake

@@ -5,7 +5,7 @@ set( MIRALL_VERSION_YEAR  2021 )
 set( MIRALL_SOVERSION 0 )
 
 # Minimum supported server version according to https://docs.nextcloud.com/server/latest/admin_manual/release_schedule.html
-set(NEXTCLOUD_SERVER_VERSION_MIN_SUPPORTED_MAJOR 19)
+set(NEXTCLOUD_SERVER_VERSION_MIN_SUPPORTED_MAJOR 20)
 set(NEXTCLOUD_SERVER_VERSION_MIN_SUPPORTED_MINOR 0)
 set(NEXTCLOUD_SERVER_VERSION_MIN_SUPPORTED_PATCH 0)
 

doc/installing.rst

@@ -8,7 +8,7 @@ There are clients for Linux, macOs, and Microsoft Windows.
 
 The currently supported server releases are the latest three stable versions
 at time of publication. It means that the |version| release series is supporting
-server major version 19, 20 and 21.
+server major version 20, 21 and 22.
 
 Installation on Mac OS X and Windows is the same as for any software
 application: download the program and then double-click it to launch the