Update git submodules

* Update plugins/codemirror-editor from branch 'master'
  to 1a7835bdfa55d60c717bad20b943e34499da0016
  - Fix CodeMirror in dark mode
    
    Release-Notes: skip
    Google-Bug-Id: b/274854578
    Change-Id: Ie6dbebae79441e9813a2993541994a2db44de1cb
    
diff --git a/plugins/codemirror-editor b/plugins/codemirror-editor
index 597573b..1a7835b 160000
--- a/plugins/codemirror-editor
+++ b/plugins/codemirror-editor
@@ -1 +1 @@
-Subproject commit 597573b5d1ed44c75844d2b8047aae08f7ef8619
+Subproject commit 1a7835bdfa55d60c717bad20b943e34499da0016