refactor: upgrade go version to 1.18.6

[aahmed7]

This upgrades go version to 1.18

related to: jenkins-x/jx#8283

• Change the version in go.mod file.
• Run go mod tidy and ensure that it does not error out.
• Change GO_VERSION in the makefile to the version you are upgrading.
• Check if there are any references to an older version and replace those.
• Verify that
  • The build works by running make build
  • Tests are working, by running make test

[jenkins-x-bot]

Hi @aahmed7. Thanks for your PR.

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[aahmed7]

/assign @ankitm123

[aahmed7]

ran a basic runtime test as well apart from make test

$ ./build/jx-verify version
version: -dev+932a56f

[ankitm123]

Replace GO_VERSION with this section: https://github.com/jenkins-x-plugins/jx-pipeline/blob/89593c6e1e9d2c01b8a26296f53b6fdedcc48410/Makefile#L16-L22.

[ankitm123]

Remember to upgrade the k8s client libraries to 0.22.X here:

jx-verify/go.mod

Lines 87 to 91 in 932a56f

	replace (
	k8s.io/api => k8s.io/api v0.21.4
	k8s.io/apimachinery => k8s.io/apimachinery v0.21.4
	k8s.io/client-go => k8s.io/client-go v0.21.4
	)

[aahmed7]

@ankitm123 sure

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[ankitm123]

/ok-to-test

[jenkins-x-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ankitm123

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[ankitm123]

@aahmed7 thanks for doing this. We will be participating in hacktoberfest, and we will most likely have lot of issues for people to contribute to :)