puppeteer: Fix the selector for opening the message action menu.
puppeteer: Fix the selector for opening the message action menu.

In this https://github.com/zulip/zulip/commit/90041ff453734f80441391f6c0b65be29a842daa,
we remove the `info` class from the message action
menu, that's why it was failing.

This commit replaces it with the correct selector.

kou/zulip,rht/zulip,eeshangarg/zulip,kou/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,zulip/zulip,zulip/zulip,rht/zulip,punchagan/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,eeshangarg/zulip,hackerkid/zulip,andersk/zulip,hackerkid/zulip,punchagan/zulip,rht/zulip,rht/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,punchagan/zulip,eeshangarg/zulip,hackerkid/zulip,punchagan/zulip,andersk/zulip,punchagan/zulip,kou/zulip,kou/zulip,hackerkid/zulip,zulip/zulip,rht/zulip,andersk/zulip,kou/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,hackerkid/zulip,eeshangarg/zulip,andersk/zulip,eeshangarg/zulip,andersk/zulip,kou/zulip,zulip/zulip