chore(release): Bump Major version in master branch to 27

Signed-off-by: Joas Schilling <coding@schilljs.com>

version.php

@@ -26,19 +26,19 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>
  *
  */
-// We only can count up. The 4. digit is only for the internal patchlevel to trigger DB upgrades
-// between betas, final and RCs. This is _not_ the public version number. Reset minor/patchlevel
+// We only can count up. The 4. digit is only for the internal patch level to trigger DB upgrades
+// between betas, final and RCs. This is _not_ the public version number. Reset minor/patch level
 // when updating major/minor version number.
 
-$OC_Version = [26, 0, 0, 8];
+$OC_Version = [27, 0, 0, 0];
 
-// The human readable string
-$OC_VersionString = '26.0.0 RC1';
+// The human-readable string
+$OC_VersionString = '27.0.0 dev';
 
 $OC_VersionCanBeUpgradedFrom = [
 	'nextcloud' => [
-		'25.0' => true,
 		'26.0' => true,
+		'27.0' => true,
 	],
 	'owncloud' => [
 		'10.11' => true,