chore(ci): add dependabot.yml

Signed-off-by: Dominic Evans <dominic.evans@uk.ibm.com>
Signed-off-by: Elad Leev <eladleev@gmail.com>

.github/dependabot.yml

@@ -0,0 +1,32 @@
+---
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    open-pull-requests-limit: 2
+    schedule:
+      interval: weekly
+    labels:
+      - "ignore-for-release"
+    commit-message:
+      prefix: chore(ci)
+      include: "scope"
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+  - package-ecosystem: gomod
+    directory: /
+    open-pull-requests-limit: 5
+    schedule:
+      interval: "daily"
+      time: "23:00"
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: chore(deps)
+      include: "scope"
+    groups:
+      golang-org-x:
+        patterns:
+          - "golang.org/x/*"