Fixed update-published-post Playwright test

refs https://github.com/TryGhost/Team/issues/2371

- added timeout between clicking the editor and starting to type otherwise some of the typing events could be missed causing a mismatch in actual vs expected output

ghost/core/test/e2e-browser/admin/publishing.spec.js

@@ -166,6 +166,7 @@ test.describe('Publishing', () => {
 
             // add some extra text to the post
             await adminPage.locator('[data-kg="editor"]').click();
+            await adminPage.waitForTimeout(100);
             await adminPage.keyboard.press('Enter');
             await adminPage.keyboard.type('This is some updated text.');