docs/examples: Increase kafka-zookeeper session/connection timeout to 60 sec
docs/examples: Increase kafka-zookeeper session/connection timeout to 60 sec

It was observed in one of the CI test failures, that zookeeper can take more than
20ms (current configured session timeout) to respond to kafka broker causing
kafka broker to crash loop. This commit increases the timeout in the GSG as well
to reflect the new timeout in CI.

Fixes: #4431
Signed-Off-By: Manali Bhutiyani <f91afadb65fa57d2313cebbfecb7de1f482fe10f@covalent.io>

michi-covalent/cilium,eloycoto/cilium,scanf/cilium,cilium-team/cilium,eloycoto/cilium,scanf/cilium,cilium/cilium,tgraf/cilium,eloycoto/cilium,michi-covalent/cilium,scanf/cilium,eloycoto/cilium,michi-covalent/cilium,tklauser/cilium,scanf/cilium,scanf/cilium,tgraf/cilium,eloycoto/cilium,cilium-team/cilium,scanf/cilium,cilium/cilium,eloycoto/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,eloycoto/cilium,tgraf/cilium,scanf/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,tklauser/cilium,michi-covalent/cilium