[Snyk] Security upgrade ubuntu from latest to 22.04

[karthequian]

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

• Dockerfile

We recommend upgrading to ubuntu:22.04, as this image has only 11 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
	CVE-2022-1664 SNYK-UBUNTU2204-DPKG-2847996	No Known Exploit
	Out-of-bounds Read SNYK-UBUNTU2204-E2FSPROGS-2801319	No Known Exploit
	Improper Certificate Validation SNYK-UBUNTU2204-OPENSSL-2807615	No Known Exploit
	OS Command Injection SNYK-UBUNTU2204-OPENSSL-2807639	No Known Exploit
	Improper Verification of Cryptographic Signature SNYK-UBUNTU2204-PERL-2789081	No Known Exploit

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