chore: bump version to v1.4.8 in release-1.4

[aramase]

No description provided.

[k8s-ci-robot]

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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	848b50d	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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[aramase]

/retest-required

[enj]

/lgtm