[Snyk] Security upgrade node from 10.22.1 to 10.23.3

[snyk-bot]

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• docker/Dockerfile

We recommend upgrading to node:10.23.3, as this image has only 718 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	678	Loop with Unreachable Exit Condition ('Infinite Loop') SNYK-DEBIAN9-OPENSSL-2426305	No Known Exploit
	714	Buffer Overflow SNYK-DEBIAN9-PYTHON27-1063180	No Known Exploit
	714	Buffer Overflow SNYK-DEBIAN9-PYTHON35-1063181	No Known Exploit
	614	Improper Input Validation SNYK-DEBIAN9-PYTHON35-584364	No Known Exploit
	614	NULL Pointer Dereference SNYK-DEBIAN9-SUBVERSION-1071813	No Known Exploit

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