Update dependencies and fix go.sum

[anthotse]

Change summary:

1. Address issue 1659: Invalid golang.org/x/net checksum and kubernetes
   version. go.sum was regenerated with go mod tidy, vendored
   dependencies where updated with go mod vendor
2. Upgrade k8s modules to 33.2, and clean go.mod replace directive
3. Update mock_k3s_client.go using update-gomock script output
4. Add ControllerModifyVolume implementation for ControllerServer Interface

Is this a bug fix or adding new feature?

Upgrade dependencies + fix for #1659

What is this PR about? / Why do we need it?

What testing is done?

[k8s-ci-robot]

Hi @anthotse. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: anthotse
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[dankova22]

/ok-to-test

[dankova22]

/retest

[anthotse]

/retest

[anthotse]

/retest

[dankova22]

/lgtm