[Snyk] Security upgrade golang from 1.16 to 1.18

[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

• build/Builder.Dockerfile

We recommend upgrading to golang:1.18, as this image has only 91 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
	500	Buffer Overflow SNYK-DEBIAN11-GLIBC-2340908	No Known Exploit
	500	Buffer Overflow SNYK-DEBIAN11-GLIBC-2340922	No Known Exploit
	514	CVE-2021-4160 SNYK-DEBIAN11-OPENSSL-2388380	No Known Exploit
	686	Loop with Unreachable Exit Condition ('Infinite Loop') SNYK-DEBIAN11-OPENSSL-2426309	No Known Exploit
	686	Loop with Unreachable Exit Condition ('Infinite Loop') SNYK-DEBIAN11-OPENSSL-2426309	No Known Exploit

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