Add Dependabot config for Go modules and GitHub Actions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nicksenap

.github/dependabot.yml

@@ -0,0 +1,21 @@
+version: 2
+updates:
+  - package-ecosystem: gomod
+    directory: /
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: "deps"
+    labels:
+      - dependencies
+    open-pull-requests-limit: 10
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    commit-message:
+      prefix: "ci"
+    labels:
+      - ci
+    open-pull-requests-limit: 5