chore(ci): Weekly Dependabot (ethereum-optimism#9266)

* chore(ci): schedule dependabot to run weekly instead of daily

* chore(ci): keep gomod and docker dependabot jobs on a daily schedule

* chore(ci): fix commit message prefix config

.github/dependabot.yml

@@ -1,36 +1,54 @@
 version: 2
 updates:
-  - package-ecosystem: docker
+  - package-ecosystem: "docker"
     directory: "/ops-bedrock"
     schedule:
-      interval: daily
+      interval: "daily"
+      day: "tuesday"
+      time: "14:30"
+      timezone: "America/New_York"
     open-pull-requests-limit: 10
+    commit-message:
+      prefix: "dependabot(docker): "
     labels:
-      - M-dependabot
+      - "M-dependabot"
 
-  - package-ecosystem: github-actions
+  - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: daily
+      interval: "weekly"
+      day: "tuesday"
+      time: "14:30"
+      timezone: "America/New_York"
     open-pull-requests-limit: 10
+    commit-message:
+      prefix: "dependabot(actions): "
     labels:
-      - M-dependabot
+      - "M-dependabot"
 
-  - package-ecosystem: npm
+  - package-ecosystem: "npm"
     directory: "/"
     schedule:
-      interval: daily
-      time: "16:30"
+      interval: "weekly"
+      day: "tuesday"
+      time: "14:30"
       timezone: "America/New_York"
     open-pull-requests-limit: 10
-    versioning-strategy: auto
+    versioning-strategy: "auto"
+    commit-message:
+      prefix: "dependabot(npm): "
     labels:
-      - M-dependabot
+      - "M-dependabot"
 
-  - package-ecosystem: gomod
+  - package-ecosystem: "gomod"
     directory: "/"
     schedule:
-      interval: daily
+      interval: "daily"
+      day: "tuesday"
+      time: "14:30"
+      timezone: "America/New_York"
     open-pull-requests-limit: 10
+    commit-message:
+      prefix: "dependabot(gomod): "
     labels:
-      - M-dependabot
+      - "M-dependabot"