Setup Dependabot (#2)

Signed-off-by: Bradley Reynolds <bradley.reynolds@tailstory.dev>

Author: shenanigansd

.github/dependabot.yml

@@ -0,0 +1,19 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      ci-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    groups:
+      javascript-dependencies:
+        patterns:
+          - "*"