Merge pull request #12889 from nextcloud/bump3.30master

Bump master to 3.30 alpha

app/build.gradle

@@ -77,7 +77,7 @@ configurations.configureEach {
 
 // semantic versioning for version code
 def versionMajor = 3
-def versionMinor = 29
+def versionMinor = 30
 def versionPatch = 0
 def versionBuild = 0 // 0-50=Alpha / 51-98=RC / 90-99=stable