release: update manifest and helm charts for v1.4.8

[aramase]

Cherry pick of #1744 on release-1.4.

#1744: release: update manifest and helm charts for v1.4.8

For details on the cherry pick process, see the cherry pick requests page.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aramase

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[aramase]

/assign @enj

[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	Required	Rerun command
pull-secrets-store-csi-driver-image-scan	462867e	link	false	/test pull-secrets-store-csi-driver-image-scan

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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[enj]

/lgtm

[aramase]

/override "scan_vulns / Run govulncheck (pull_request)"
/override "scan_vulns / Run govulncheck"
/override "Run govulncheck"