Revert "Update to k8s v0.32.0 and runtime to v0.20.0 (#226)"

[kfswain]

This reverts commit fbe77dd.

Had to revert this as this breaks the EPP. The predicates seem to be causing the endpointslice reconciler to never reconcile. Reverting for now to get back to healthy. We can choose to investigate or wait for a later patch that might have stability (potential issues with a new Minor Rev of controller runtime?)

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[ahg-g]

This is not the bug, the issue is that the endpointslice was not being reconciled. One theory is that we don't force a sync at epp startup, and so we miss reconciling the endpointslice if the model service was created before the epp, which is the case in our example.

[danehans]

The predicates seem to be causing the endpointslice reconciler to never reconcile.

This is a known issue that I captured in #174.