go.mod: bump openshift/api to latest && cluster-api to v1.11

This bumps openshift/api to latest and bumps cluster-api to v1.11.

CAPI v1.11 contains breaking changes and not all providers have
completed migrating to v1.11 yet. Unfortunately this breaks us and
makes it so we are unable to update openshift/api (due to conflicts
with the latest apimachinery package which is incompatible with older
versions of CAPI).

Therefore, I am vendoring in the work-in-progress changes in CAPA,
CAPZ, & CAPX. The installer only uses this code to generate the
manifests (the controllers are vendored separately), so the risk
here is relatively low. This is meant as a temporary measure to
unblock us from making progress. Once these providers have
completed the merge to v1.11, we should be fine to remove
these replaces and vendor as usual.

Author: patrickdillon