build: bump version to run sha265 for background job arguments migration

Follow-up for https://github.com/nextcloud/server/pull/47769

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

version.php

@@ -9,7 +9,7 @@
 // between betas, final and RCs. This is _not_ the public version number. Reset minor/patch level
 // when updating major/minor version number.
 
-$OC_Version = [31, 0, 0, 2];
+$OC_Version = [31, 0, 0, 3];
 
 // The human-readable string
 $OC_VersionString = '31.0.0 dev';