chore: use N1_HIGHCPU_8 for cloudbuild and update cloudbuild image

[aramase]

Signed-off-by: Anish Ramasekar anish.ramasekar@gmail.com

What this PR does / why we need it:

Currently we build linux/amd64, linux/arm64, windows/1809, windows/1903, windows/1909 and windows/2004 images with cloudbuild. This takes ~1h10m to complete. Use larger machine type N1_HIGHCPU_8 for cloudbuild jobs to speed up the build. Also, update the cloudbuild base image to a newer version.

Note: This machine type is used across all kubernetes builds.

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

Special notes for your reviewer:

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aramase

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[k8s-ci-robot]

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

Test name	Commit	Details	Rerun command
pull-secrets-store-csi-driver-e2e-provider	a1adfe3	link	/test pull-secrets-store-csi-driver-e2e-provider

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[tam7t]

/test pull-secrets-store-csi-driver-e2e-windows

[tam7t]

/lgtm