[Snyk] Security upgrade ubuntu from 22.04 to 22.10

[macfarla]

This PR was automatically created by Snyk using the credentials of a real user.

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 ubuntu:22.10, as this image has only 7 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	Issue	Exploit Maturity
	Information Exposure SNYK-UBUNTU2204-GNUTLS28-3319581	No Known Exploit
	Integer Overflow or Wraparound SNYK-UBUNTU2204-KRB5-3126899	No Known Exploit
	Access of Resource Using Incompatible Type ('Type Confusion') SNYK-UBUNTU2204-OPENSSL-3314792	No Known Exploit
	CVE-2022-4415 SNYK-UBUNTU2204-SYSTEMD-3180311	No Known Exploit
	Out-of-bounds Read SNYK-UBUNTU2204-TAR-3261138	No Known Exploit

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[jframe]

Fixed by change Docker to use latest Ubuntu LTS in #517