Update DAVx⁵ to 3.3.12-ose (303120005)

metadata/at.bitfire.davdroid.yml

@@ -1471,7 +1471,19 @@ Builds:
         build.gradle
       - sed -i -e '/flexbox-layout/d' ../build.gradle
 
+  - versionName: 3.3.12-ose
+    versionCode: 303120005
+    commit: 189d7a31d82cf171373aab1b92fb8036e07d1e64
+    subdir: app
+    submodules: true
+    gradle:
+      - standard
+    prebuild:
+      - sed -i -e 's/com.google.android:flexbox/com.github.google:flexbox-layout/'
+        build.gradle
+      - sed -i -e '/flexbox-layout/d' ../build.gradle
+
 AutoUpdateMode: Version v%v
 UpdateCheckMode: Tags ^v[0-9.]+-ose[0-9]*$
-CurrentVersion: 3.3.11-ose
-CurrentVersionCode: 303110004
+CurrentVersion: 3.3.12-ose
+CurrentVersionCode: 303120005