Update Codemirror version to the latest which allows us to set screen reader labels on Codemirror editor.

refs #5197

web/pgadmin/static/js/backform.pgadmin.js

@@ -1810,12 +1810,15 @@ define([
       // Use the Backform Control's render function
       Backform.Control.prototype.render.apply(this, arguments);
 
+      var field = _.defaults(this.field.toJSON(), this.defaults);
+
       this.sqlCtrl = CodeMirror.fromTextArea(
         (this.$el.find('textarea')[0]), {
           lineNumbers: true,
           mode: 'text/x-pgsql',
           readOnly: true,
           extraKeys: pgAdmin.Browser.editor_shortcut_keys,
+          screenReaderLabel: field.label,
         });
 
       this.reflectPreferences();
@@ -2574,6 +2577,7 @@ define([
           lineNumbers: true,
           mode: 'text/x-pgsql',
           extraKeys: pgAdmin.Browser.editor_shortcut_keys,
+          screenReaderLabel: data.label,
         });
 
       self.reflectPreferences();