Update Nextcloud to 20210520 (20210520)

metadata/com.nextcloud.android.beta.yml

@@ -7050,9 +7050,25 @@ Builds:
     scandelete:
       - src/androidTest
 
+  - versionName: '20210520'
+    versionCode: 20210520
+    commit: dev-20210520
+    submodules: true
+    gradle:
+      - versionDev
+    rm:
+      - user_manual
+      - gplay.gradle
+    prebuild:
+      - mkdir -p $HOME/.gradle
+      - echo "org.gradle.jvmargs=-Xmx9g -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError"
+        > $HOME/.gradle/gradle.properties
+    scandelete:
+      - src/androidTest
+
 MaintainerNotes: Tags get removed. See https://github.com/nextcloud/android/issues/969.
 
 AutoUpdateMode: Version dev-%c
 UpdateCheckMode: Tags ^dev
-CurrentVersion: '20210515'
-CurrentVersionCode: 20210515
+CurrentVersion: '20210520'
+CurrentVersionCode: 20210520