chore(in-cluster): change update plan to match latest example

https://docs.rke2.io/upgrade/automated_upgrade

bootstrap/cluster-resources/in-cluster/rke2-upgrade-plan.yaml

@@ -10,8 +10,6 @@ spec:
   concurrency: 1
   nodeSelector:
     matchExpressions:
-       - {key: rke2-upgrade, operator: Exists}
-       - {key: rke2-upgrade, operator: NotIn, values: ["disabled", "false"]}
        # When using k8s version 1.19 or older, swap control-plane with master
        - {key: node-role.kubernetes.io/control-plane, operator: In, values: ["true"]}
   tolerations:
@@ -25,7 +23,7 @@ spec:
 #    force: true
   upgrade:
     image: rancher/rke2-upgrade
-  version: v1.30.1+rke2r1
+  version: v1.30.1-rke2r1
 ---
 # Agent plan
 apiVersion: upgrade.cattle.io/v1
@@ -39,6 +37,7 @@ spec:
   concurrency: 2
   nodeSelector:
     matchExpressions:
+      - {key: beta.kubernetes.io/os, operator: In, values: ["linux"]}
       - {key: rke2-upgrade, operator: Exists}
       - {key: rke2-upgrade, operator: NotIn, values: ["disabled", "false"]}
       # When using k8s version 1.19 or older, swap control-plane with master
@@ -54,5 +53,5 @@ spec:
     force: true
   upgrade:
     image: rancher/rke2-upgrade
-  version: v1.30.1+rke2r1
+  version: v1.30.1-rke2r1