Upgrade Kubernetes to v1.31.3

[Electronic-Waste]

What this PR does / why we need it:

• Kubernetes upgrade to v1.31.3
• Minikube upgrade to v1.34.0 in CI
• Remove deprecated grpc.Dial and replace it with grpc.NewClient

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #2457

Checklist:

• Docs included if any changes are user facing

/cc @kubeflow/wg-automl-leads @helenxie-bit @tariq-hasan

[google-oss-prow]

@Electronic-Waste: GitHub didn't allow me to request PR reviews from the following users: tariq-hasan.

Note that only kubeflow members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

What this PR does / why we need it:

• Kubernetes upgrade to v1.31.3
• Minikube upgrade to v1.34.0 in CI

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #2457

Checklist:

• Docs included if any changes are user facing

/cc @kubeflow/wg-automl-leads @helenxie-bit @tariq-hasan

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[google-oss-prow]

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[Electronic-Waste]

Error in CI: https://github.com/kubeflow/katib/actions/runs/12722327561/job/35466233718?pr=2478

Error: pkg/common/v1beta1/katib_manager_util.go:49:15: SA1019: grpc.Dial is deprecated: use NewClient instead.  Will be supported throughout 1.x. (staticcheck)
	conn, err := grpc.Dial(addr, grpc.WithTransportCredentials(insecure.NewCredentials()))
	             ^
Error: cmd/metricscollector/v1beta1/file-metricscollector/main.go:314:17: SA1019: grpc.Dial is deprecated: use NewClient instead.  Will be supported throughout 1.x. (staticcheck)
			conn, err := grpc.Dial(*earlyStopServiceAddr, grpc.WithTransportCredentials(insecure.NewCredentials()))
			             ^
Error: cmd/metricscollector/v1beta1/file-metricscollector/main.go:436:15: SA1019: grpc.Dial is deprecated: use NewClient instead.  Will be supported throughout 1.x. (staticcheck)
	conn, err := grpc.Dial(*dbManagerServiceAddr, grpc.WithTransportCredentials(insecure.NewCredentials()))
	             ^
make: *** [Makefile:38: lint] Error 1
Error: Process completed with exit code 2.

We also need to re-implement grpc-related logic.

[Electronic-Waste]

This PR has been ready for review now!

PTAL if you have time👀 @kubeflow/wg-automl-leads @helenxie-bit @tariq-hasan

[andreyvelich]

Thank you for this update @Electronic-Waste!
/lgtm
/assign @kubeflow/wg-training-leads