Add secure diagnostics endpoint

Bump google.golang.org/protobuf from 1.31.0 to 1.33.0 (#59)

Bump tag to 1.0.23

Add nil pointer check for client cert key pairs (#62)

Update endpoint IP selection order based on address type found

Signed-off-by: Rahul Ganesh <[email protected]>

bump x/net (#60)

Matching controller-runtime version with CAPI release (#58)

Bumping CAPI to v1.6.0