chore: ungroup azure-cni and cilium from renovate PR (#8031)

Author: Devinwong

.github/renovate.json

@@ -219,11 +219,8 @@
     },
     {
       "matchPackageNames": [
-        "azure-cni",
-        "containernetworking/azure-cni",
-        "containernetworking/azure-ipam"
+        "containernetworking/azure-cni"
       ],
-      "groupName": "azure-cni-cilium-ipam",
       "reviewers": [
         "team:acn-cni-reviewers"
       ],
@@ -249,9 +246,10 @@
       "matchPackageNames": [
         "containernetworking/cilium/cilium",
         "containernetworking/cilium/cilium-distroless",
-        "containernetworking/cilium/cilium-distroless-init"
+        "containernetworking/cilium/cilium-distroless-init",
+        "containernetworking/azure-ipam"
       ],
-      "groupName": "azure-cni-cilium-ipam",
+      "groupName": "cilium-ipam",
       "versioning": "regex:^v(?<major>\\d+)(\\.(?<minor>\\d+))?(\\.(?<patch>\\d+))?(-(?<prerelease>.*))?$",
       "ignoreUnstable": false,
       "reviewers": [