[Snyk] Security upgrade @kubernetes/client-node from 0.16.3 to 0.21.0

[kpt-fn-bot]

Snyk has created this PR to fix 2 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• ts/create-kpt-functions/package.json
• ts/create-kpt-functions/package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Uncontrolled Resource Consumption ('Resource Exhaustion') SNYK-JS-TAR-6476909	646
	Denial of Service (DoS) SNYK-JS-JOSE-3018688	479

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Denial of Service (DoS)

[//]: # 'snyk:metadata:{"customTemplate":{"variablesUsed":[],"fieldsUsed":[]},"dependencies":[{"name":"@kubernetes/client-node","from":"0.16.3","to":"0.21.0"}],"env":"prod","issuesToFix":[{"exploit_maturity":"No Known Exploit","id":"SNYK-JS-JOSE-3018688","priority_score":479,"priority_score_factors":[{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"5.3","score":265},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Denial of Service (DoS)"},{"exploit_maturity":"Proof of Concept","id":"SNYK-JS-TAR-6476909","priority_score":646,"priority_score_factors":[{"type":"exploit","label":"Proof of Concept","score":107},{"type":"fixability","label":true,"score":214},{"type":"cvssScore","label":"6.5","score":325},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Uncontrolled Resource Consumption ('Resource Exhaustion')"}],"prId":"4fb0447f-b7e1-4d69-af57-a1fe03132c35","prPublicId":"4fb0447f-b7e1-4d69-af57-a1fe03132c35","packageManager":"npm","priorityScoreList":[479,646],"projectPublicId":"8b4cedfa-673d-4e26-b948-5fcd145bab02","projectUrl":"https://app.snyk.io/org/kpt-fn-bot/project/8b4cedfa-673d-4e26-b948-5fcd145bab02?utm_source=github&utm_medium=referral&page=fix-pr","prType":"fix","templateFieldSources":{"branchName":"default","commitMessage":"default","description":"default","title":"default"},"templateVariants":["updated-fix-title","priorityScore"],"type":"auto","upgrade":["SNYK-JS-JOSE-3018688","SNYK-JS-TAR-6476909"],"vulns":["SNYK-JS-JOSE-3018688","SNYK-JS-TAR-6476909"],"patch":[],"isBreakingChange":false,"remediationStrategy":"vuln"}'

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