Nextcloud client: Add 3.21.0 RC1

metadata/com.nextcloud.client.yml

@@ -2072,6 +2072,25 @@ Builds:
     scandelete:
       - app/src/androidTest/assets
 
+  - versionName: 3.21.0 RC1
+    versionCode: 30210051
+    commit: rc-3.21.0-01
+    subdir: app
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - generic
+    rm:
+      - user_manual
+    prebuild:
+      - mkdir -p $HOME/.gradle
+      - echo org.gradle.jvmargs=-Xmx9g -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError
+        > $HOME/.gradle/gradle.properties
+    scandelete:
+      - app/src/androidTest/assets
+
 MaintainerNotes: 'Latest 3 stable version will be kept, RC versions will be directly
     outdated by either a new RC or by a stable version: 3.3.0 RC1 -> 3.3.0 RC2 ->
     3.3.0 (stable)'