Add Dependabot configuration for automated dependency updates

Author: chrisreddington

.github/dependabot.yml

@@ -0,0 +1,20 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for more information:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# https://containers.dev/guide/dependabot
+
+version: 2
+updates:
+ - package-ecosystem: "devcontainers"
+   directory: "/"
+   schedule:
+     interval: weekly
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: weekly
+- package-ecosystem: "gomod"
+  directory: "/"
+  schedule:
+    interval: weekly