Update part4b.md

I do not have this problem with Mongoose 7.0.3

Author: MarcGuay

src/content/4/en/part4b.md

@@ -178,7 +178,7 @@ When running your tests you may run across the following console warning:
 
 ![jest console warning about not exiting](../../images/4/8.png)
 
-The problem is quite likely caused by the Mongoose version 6.x, the problem does not appear when version 5.x is used. [Mongoose documentation](https://mongoosejs.com/docs/jest.html) does not recommend testing Mongoose applications with Jest.
+The problem is quite likely caused by the Mongoose version 6.x, the problem does not appear when version 5.x or 7.x is used. [Mongoose documentation](https://mongoosejs.com/docs/jest.html) does not recommend testing Mongoose applications with Jest.
 
 [One way](https://stackoverflow.com/questions/50687592/jest-and-mongoose-jest-has-detected-opened-handles) to get rid of this is to
 add to the directory <i>tests</i> a file <i>teardown.js</i> with the following content