Upgrade job should upgrade from 1.20

[CecileRobertMichon]

/kind bug

What steps did you take and what happened:
[A clear and concise description of what the bug is.]

https://testgrid.k8s.io/sig-cluster-lifecycle-cluster-api-provider-azure#capz-periodic-capi-e2e-main is broken since #1524 merged because it's trying to upgrade from 1.19 to 1.21 which is not allowed. We should change the KUBERNETES_VERSION_UPGRADE_FROM variable default
in https://github.com/nader-ziada/cluster-api-provider-azure/blob/08f456963fb47f801e75eae730837e3cffe57bfc/test/e2e/config/azure-dev.yaml to v1.20.9 which is the latest 1.20 patch.

What did you expect to happen:

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• cluster-api-provider-azure version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

[CecileRobertMichon]

/good-first-issue
/help

[k8s-ci-robot]

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[Rahul-D78]

/assign

[Rahul-D78]

hi @CecileRobertMichon can I work on this

[jayesh-srivastava]

/assign

[CecileRobertMichon]

@jayesh-srivastava I'm sorry, it looks like @Rahul-D78 has already assigned themselves this issue

[CecileRobertMichon]

/unassign @jayesh-srivastava

[jayesh-srivastava]

Oh okay, no worries : )

[CecileRobertMichon]

/close

@nader-ziada looks like upgrade tests are still failing after your PR https://testgrid.k8s.io/sig-cluster-lifecycle-cluster-api-provider-azure#capz-periodic-capi-e2e-main but we can tackle in a separate issue, closing this one

[k8s-ci-robot]

@CecileRobertMichon: Closing this issue.

In response to this:

/close

@nader-ziada looks like upgrade tests are still failing after your PR https://testgrid.k8s.io/sig-cluster-lifecycle-cluster-api-provider-azure#capz-periodic-capi-e2e-main but we can tackle in a separate issue, closing this one

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.