Upgrade go version to 1.20 for notebook-controller

[harshad16]

Upgrade go version to 1.20 for notebook-controller

Description

Related-to: https://issues.redhat.com/browse/RHOAIENG-7424

How Has This Been Tested?

Tested it with following images:

quay.io/harshad16/odh-kf-notebook-controller-live:go20
quay.io/harshad16/odh-notebook-controller-live:go20

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[atheo89]

/lgtm

[harshad16]

/approve
Merge it for release

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: harshad16

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[openshift-ci]

@harshad16: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/kf-notebook-controller-pr-image-mirror	1b5cd6b	link	unknown	/test kf-notebook-controller-pr-image-mirror
ci/prow/kf-notebook-controller-unit	1b5cd6b	link	unknown	/test kf-notebook-controller-unit
ci/prow/odh-notebook-controller-pr-image-mirror	1b5cd6b	link	unknown	/test odh-notebook-controller-pr-image-mirror
ci/prow/odh-notebook-controller-unit	1b5cd6b	link	unknown	/test odh-notebook-controller-unit
ci/prow/odh-notebook-controller-e2e	1b5cd6b	link	unknown	/test odh-notebook-controller-e2e
ci/prow/images	1b5cd6b	link	unknown	/test images

Full PR test history. Your PR dashboard.

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[harshad16]

/cherrypick stable

[openshift-cherrypick-robot]

@harshad16: new pull request created: #333

In response to this:

/cherrypick stable

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