KEP-4033: bump to beta

Signed-off-by: Peter Hunt <pehunt@redhat.com>

keps/prod-readiness/sig-node/4033.yaml

@@ -4,3 +4,5 @@
 kep-number: 4033
 alpha:
   approver: "@johnbelamaric"
+beta:
+  approver: "@johnbelamaric"

keps/sig-node/4033-group-driver-detection-over-cri/kep.yaml

@@ -22,13 +22,12 @@ stage: alpha
 # The most recent milestone for which work toward delivery of this KEP has been
 # done. This can be the current (upcoming) milestone, if it is being actively
 # worked on.
-latest-milestone: "v1.28"
+latest-milestone: "v1.31"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
   alpha: "v1.28"
-  beta: "v1.yy"
-  stable: "v1.zz"
+  beta: "v1.31"
 
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled
@@ -39,4 +38,5 @@ feature-gates:
 disable-supported: true
 
 # The following PRR answers are required at beta release
-metrics: []
+# No metrics will be added for this feature, as it's an internal
+# implementation detail