chat: Increase the deadline for a test.
chat: Increase the deadline for a test.

The deadline is sometimes exceeded when running race on jenkins.

Change-Id: Id1f74c842f712dceb6b90b35b0d3dac7060a2c3b

vanadium/chat,vanadium/chat,vanadium/chat,vanadium/chat,viksit/chat,vanadium/chat,viksit/chat,viksit/chat,viksit/chat,viksit/chat