chore: add gomod dependency updates to dependabot

Signed-off-by: Yetkin Timocin <ytimocin@microsoft.com>

Author: ytimocin

.github/dependabot.yml

@@ -6,3 +6,33 @@ updates:
       interval: "weekly"
     commit-message:
       prefix: "chore"
+
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "chore"
+    labels:
+      - "dependencies"
+    open-pull-requests-limit: 10
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]
+    groups:
+      kubernetes:
+        patterns:
+          - "k8s.io/*"
+          - "sigs.k8s.io/*"
+      azure-sdk:
+        patterns:
+          - "github.com/Azure/*"
+          - "github.com/AzureAD/*"
+      all-others:
+        patterns:
+          - "*"
+        exclude-patterns:
+          - "k8s.io/*"
+          - "sigs.k8s.io/*"
+          - "github.com/Azure/*"
+          - "github.com/AzureAD/*"