Bump golang version in go.mod to go 1.19

[lobziik]

What this PR does / why we need it:
Follow up for #658
Upstream is using golang 1.19 now https://github.com/kubernetes/cloud-provider/blob/release-1.25/go.mod

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

Special notes for your reviewer:

Release note:

Update golang version to 1.19

[lobziik]

/cc @lubronzhan

[k8s-ci-robot]

Hi @lobziik. Thanks for your PR.

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[elmiko]

/ok-to-test

[lubronzhan]

Oh just saw your PR. could you help update go version in these two files as well?
https://github.com/kubernetes/cloud-provider-vsphere/blob/master/cluster/images/controller-manager/Dockerfile
https://github.com/kubernetes/cloud-provider-vsphere/blob/master/hack/images/ci/Dockerfile#L6

[lobziik]

/test pull-cloud-provider-vsphere-e2e-test

[lubronzhan]

/lgtm
/approve
Thank you!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lobziik, lubronzhan

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