Add dependabot YAML configuration.

Signed-off-by: Matt Moyer <moyerm@vmware.com>

.github/dependabot.yml

@@ -0,0 +1,13 @@
+# See https://docs.github.com/en/github/administering-a-repository/enabling-and-disabling-version-updates
+
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "daily"