🌱 Add dependabot configuration (llm-d-incubation#247)

Signed-off-by: Andy Anderson <andy@clubanderson.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: clubanderson

.github/dependabot.yml

@@ -0,0 +1,42 @@
+version: 2
+updates:
+
+  # GitHub Actions dependencies
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels:
+      - "dependencies"
+      - "release-note-none"
+    commit-message:
+      prefix: "deps(actions)"
+
+  # Go module updates
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+    commit-message:
+      prefix: "deps(go)"
+    labels:
+      - "dependencies"
+      - "release-note-none"
+    ignore:
+      - dependency-name: "go"
+        update-types: ["version-update:semver-major", "version-update:semver-minor"]
+      - dependency-name: "k8s.io/*"
+        update-types: ["version-update:semver-major", "version-update:semver-minor"]
+      - dependency-name: "sigs.k8s.io/*"
+        update-types: ["version-update:semver-major", "version-update:semver-minor"]
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]
+    groups:
+      kubernetes:
+        patterns:
+          - "k8s.io/*"
+          - "sigs.k8s.io/*"
+      go-dependencies:
+        patterns:
+          - "*"