chore(renovate): polish kubectl

Try to override depName label for kubectl. As we use kubernetes as source to detect version, we need to rename it.

renovate.json5

@@ -36,10 +36,11 @@
         'k3s-io/k3s',
       ],
       separateMinorPatch: true,
-      versioning: "semver"
-//      separateMultipleMinor: true, // Pending merge of https://github.com/renovatebot/renovate/pull/24538 to be effective
+      versioning: "semver",
+      //separateMultipleMinor: true, // Pending merge of https://github.com/renovatebot/renovate/pull/24538 to be effective
     },
     {
+      description: "Add common labels",
       matchDepPatterns: ["*"],
       addLabels: [
         // See full list of fields available at https://docs.renovatebot.com/templates/#other-available-fields
@@ -50,6 +51,17 @@
         "target/{{baseBranch}}", // To easily filter PR on base branch, like all PR related to k3s 1.25
       ]
     },
+    {
+      description: 'Kubectl: Get distinct branches for each minor, e.g. 1.22.x and 1.23.x. See https://docs.renovatebot.com/presets-default/#separatepatchreleases and https://docs.renovatebot.com/faq/#separate-patch-releases-from-minor-releases',
+      matchPackageNames: [
+        'kubernetes/kubernetes',
+      ],
+      separateMinorPatch: true,
+      addLabels: [
+        "depName/kubernetes-kubectl", //override common labels for kubectl, as we have to scan kubernetes releases
+      ]
+      //separateMultipleMinor: true, // Pending merge of https://github.com/renovatebot/renovate/pull/24538 to be effective
+    }
   ],
   regexManagers: [
     {