tests: use t.Cleanup instead of defer in test helpers#2768

Aggarwalmansi wants to merge 2 commits intogofr-dev:developmentgofr-dev/gofr:developmentfrom

Aggarwalmansi:test/use-t-cleanup-in-mocksAggarwalmansi/gofr:test/use-t-cleanup-in-mocksCopy head branch name to clipboard