Bump CAPI to v1.7.3

[damdo]

What type of PR is this?
/kind other

What this PR does / why we need it:
Bump CAPI to v1.7.3

Release note:

Bump CAPI to v1.7.3

[k8s-ci-robot]

@damdo: The label(s) kind/other cannot be applied, because the repository doesn't have them.

In response to this:

What type of PR is this?
/kind other

What this PR does / why we need it:
Bump CAPI to v1.7.3

Release note:

Bump CAPI to v1.7.3

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-sigs/prow repository.

[damdo]

/assign @cpanato

[netlify]

✅ Deploy Preview for kubernetes-sigs-cluster-api-gcp ready!

Name	Link
🔨 Latest commit	4dd31fc
🔍 Latest deploy log	https://app.netlify.com/sites/kubernetes-sigs-cluster-api-gcp/deploys/66755be0cd8f4400085e1ac2
😎 Deploy Preview	https://deploy-preview-1267--kubernetes-sigs-cluster-api-gcp.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[cpanato]

thanks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cpanato, damdo

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [cpanato]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment