bridge: Wait longer before aborting tests

Maybe this will help with the kafka tests.

Author: svix-jplatte

bridge/.config/nextest.toml

@@ -1,3 +1,3 @@
 [profile.default]
 retries = 2
-slow-timeout = { period = "30s", terminate-after = 2 }
+slow-timeout = { period = "30s", terminate-after = 4 }