ci: add `dependabot.yml

SARDONYX-sard · SARDONYX-sard · commit e420e1e09d97 · 2022-01-08T00:36:05.000+09:00
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
@@ -0,0 +1,9 @@
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+      time: "03:00"
+      timezone: "Asia/Tokyo"
+    target-branch: "main"
