Upgrade Electron to 28.1.5

Co-authored-by: Fedor Indutny <238531+indutny@users.noreply.github.com>

ts/textsecure/WebAPI.ts

@@ -99,6 +99,7 @@ function _validateResponse(response: any, schema: any) {
         case 'object':
         case 'string':
         case 'number':
+          // eslint-disable-next-line valid-typeof
           if (typeof response[i] !== schema[i]) {
             return false;
           }