Bump integration test to support Go 1.23

[mohitchaurasia91]

https://go.dev/dl/

Stable versions

go1.23.2
go1.22.8

test performed

$ cat go123.yaml
---
steps:
- name: "golang:1.23"
  entrypoint: /bin/bash
  args:
  - -c
  - "make ghpc test-engine"
$ gcloud builds submit --config=go123.yaml
# OK

Submission Checklist

NOTE: Community submissions can take up to 2 weeks to be reviewed.

Please take the following actions before submitting this pull request.

• Fork your PR branch from the Toolkit "develop" branch (not main)
• Test all changes with pre-commit in a local branch #
• Confirm that "make tests" passes all tests
• Add or modify unit tests to cover code changes
• Ensure that unit test coverage remains above 80%
• Update all applicable documentation
• Follow Cluster Toolkit Contribution guidelines #