ci: enable dependabot (#1028)

* Create dependabot.yml

* flip day + time

* add gomod

* pnpm web

* huzzah - the walrus is here

* lines lines lines

* do you want to climb a mountain

* singing spock

* I'M IN SPACE

* what's a little / among friends

.github/dependabot.yml

@@ -0,0 +1,35 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      # Check for updates to GitHub Actions every week
+      interval: weekly
+      day: saturday
+      time: "07:00"
+    groups:
+      chore/dependabot/github:
+        patterns:
+          - "*"
+
+  - package-ecosystem: gomod
+    directory: /
+    schedule:
+      interval: weekly
+      day: saturday
+      time: "07:00"
+    groups:
+      chore/dependabot/golang:
+        patterns:
+          - "*"
+
+  - package-ecosystem: npm
+    directory: /web
+    schedule:
+      interval: weekly
+      day: saturday
+      time: "07:00"
+    groups:
+      chore/dependabot/npm:
+        patterns:
+          - "*"