fix(tests): reduce chance of `The play() request was interrupted by a…

… call to pause` error

cf https://github.com/openwhyd/openwhyd/actions/runs/6081509266/job/16497661079#step:10:603
contributes to #714.

cypress/e2e/acceptance.spec.ts

@@ -61,7 +61,7 @@ context('Openwhyd', () => {
     // should play the track
     cy.get('#btnPlay.playing', { timeout: 10000 }).should('be.visible');
 
-    cy.wait(2000); // TODO: get rid of this. cf https://github.com/openwhyd/openwhyd/pull/495/commits/7c0eddc9dc9e60fa163624d356837e1a111018d1
+    cy.wait(4000); // TODO: get rid of this. cf https://github.com/openwhyd/openwhyd/pull/495/commits/7c0eddc9dc9e60fa163624d356837e1a111018d1
 
     // should pause the track when the user clicks on the play/pause button
     cy.get('#btnPlay').click();