fix: package.json & package-lock.json to reduce vulnerabilities

Failed in 1m 28s
builddocker run -v $(pwd):/build/mockserver-client-node -w /build/mockserver-client-node -a stdout -a stderr -e BUILDKITE_BRANCH=snyk-fix-3c3483ae520865a2efd9f3188db2aa44 mockserver/mockserver:grunt /build/mockserver-client-node/scripts/buildkite_quick_build.sh
Waited 1s
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Ran in 57s
Total Job Run Time: 1m 25s