build: add dependabot

Signed-off-by: Bryan Cole <[email protected]>

Author: ColePBryan

.github/dependabot.yml

@@ -0,0 +1,16 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/tap_aggregator"
+    schedule:
+      interval: "daily"
+
+  - package-ecosystem: "cargo"
+    directory: "/tap_core"
+    schedule:
+      interval: "daily"
+
+  - package-ecosystem: "cargo"
+    directory: "/tap_integration_tests"
+    schedule:
+      interval: "daily"