fixing vm patch logic using correct api version

[nikhilbarge]

What this PR does / why we need it:
To Fix vm patch logic using correct api version

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

Testing done:
Manual testing performed to verify patch operation while created virtualmachine with api version v1alpha3.

{"level":"info","time":"2025-05-27T06:51:07.001520842Z","caller":"utils/utils.go:331","msg":"successfully fetched the virtual machines with name wl-calico-node-pool-1-jwml4-xntjd-w2p75 and namespace test-ns","TraceId":"ee57dca4-d293-4fe3-b733-710b6282d9de"}
{"level":"info","time":"2025-05-27T06:51:07.001810991Z","caller":"utils/utils.go:437","msg":"PatchVirtualMachine: patch virtualmachine name: wl-calico-node-pool-1-jwml4-xntjd-w2p75","TraceId":"ee57dca4-d293-4fe3-b733-710b6282d9de"}
{"level":"info","time":"2025-05-27T06:51:07.004121206Z","caller":"utils/utils.go:441","msg":"PatchVirtualMachine: converting v1alpha4 VirtualMachine to v1alpha3 VirtualMachine, name: wl-calico-node-pool-1-jwml4-xntjd-w2p75","TraceId":"ee57dca4-d293-4fe3-b733-710b6282d9de"}
{"level":"info","time":"2025-05-27T06:51:07.199402762Z","caller":"utils/utils.go:504","msg":"PatchVirtualMachine: successfully patched the virtualmachine, name: wl-calico-node-pool-1-jwml4-xntjd-w2p75","TraceId":"ee57dca4-d293-4fe3-b733-710b6282d9de"}

v1alpha3_patch_testing.log

Special notes for your reviewer:

Release note:

Fix vm patch logic using correct api version 

[k8s-ci-robot]

Hi @nikhilbarge. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[chethanv28]

/ok-to-test
/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chethanv28, nikhilbarge, vdkotkar

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