Update org.koreader.launcher to v2020.12 (7883)

metadata/org.koreader.launcher.yml

@@ -532,8 +532,30 @@ Builds:
       - ANDROID_FLAVOR=fdroid ./kodev release android
     ndk: r15c
 
+  - versionName: v2020.12
+    versionCode: 7883
+    commit: v2020.12
+    submodules: true
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y gcc-multilib luarocks p7zip-full ragel
+    output: koreader-android-*.apk
+    rm:
+      - platform/ubuntu-touch/
+      - platform/win32/
+      - platform/kindle/wmctrl
+    prebuild: sed -i -e 's#./gradlew#gradle#' platform/android/luajit-launcher/Makefile
+    scandelete:
+      - base/thirdparty/
+      - base/spec/unit/data/
+    build:
+      - NDK=$$NDK$$
+      - SDK=$$SDK$$
+      - ANDROID_FLAVOR=fdroid ./kodev release android
+    ndk: r15c
+
 AutoUpdateMode: Version %v
 UpdateCheckMode: HTTP
 UpdateCheckData: https://ota.koreader.rocks/koreader-android-fdroid-latest|(\d+)$|.|(v.*)
-CurrentVersion: v2020.11
-CurrentVersionCode: 7820
+CurrentVersion: v2020.12
+CurrentVersionCode: 7883