add dependabot

Author: odacremolbap

.github/dependabot.yaml

@@ -0,0 +1,26 @@
+# Dependabot configuration
+#
+# For more information, please refer to:
+#   https://docs.github.com/en/code-security/dependabot/dependabot-version-updates
+
+version: 2
+
+updates:
+
+# Maintain Go modules
+- package-ecosystem: gomod
+  directory: /
+  schedule:
+    interval: weekly
+  ignore:
+  # We prefer to keep control over Knative module imports.
+  - dependency-name: knative.dev/*
+  # The version of Kubernetes module imports needs to be consistent across all
+  # modules. Besides, that version is determined by the current Knative version.
+  - dependency-name: k8s.io/*
+
+# Maintain dependencies for GitHub Actions
+- package-ecosystem: github-actions
+  directory: /
+  schedule:
+    interval: weekly