node: Upgrade tooling

Upgrade node tooling with

	npx --prefix .hermit/node -y npm-check-updates --packageFile .hermit/node/package.json -u
	npm --prefix .hermit/node install
	npm --prefix .hermit/node audit fix

Running the audit fix command was suggested by Node. Re-running the
first two commands afterwards made no difference.

Author: juliaogris