[NIFI-4998] update node and npm version

[scottyaslan]

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[patricker]

That resolved my npm proxy issue; build succeeded.
I had no issues, but I noticed that the nifi-jolt-transform-json-ui project also references the frontend-maven-plugin and uses the old version numbers.

[mcgilman]

@patricker Thanks for the verification!

@scottyaslan Want to update the other frontend-maven-plugin usage before we merge this in?

[scottyaslan]

@patricker nice catch! @mcgilman I have update this PR. Please review...

[mcgilman]

Thanks @scottyaslan! This has been merged to master.