Downgrade librime to 1.12

Author: wengxt

org.fcitx.Fcitx5.Addon.Rime.yaml

@@ -38,7 +38,7 @@ modules:
     sources:
       - type: git
         url: https://github.com/rime/librime
-        tag: 1.13.1
+        tag: 1.12.0
         x-checker-data:
           type: anitya
           project-id: 228902