chore: configure Dependabot for automated dependency updates

- Enable Cargo (Rust) updates on Mondays at 03:00 UTC
- Enable npm (Node.js/pnpm) updates on Mondays at 04:00 UTC
- Enable pip (Python) updates on Mondays at 05:00 UTC
- Enable gomod (Go) updates on Mondays at 06:00 UTC
- Enable GitHub Actions updates on Tuesdays at 03:00 UTC
- Configure auto-triage with labels and reviewers
- Limit to 10 open PRs per ecosystem, 5 for actions

Author: ArcturianWarrior999

.github/dependabot.yml

@@ -0,0 +1,81 @@
+version: 2
+updates:
+  # Rust dependencies
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "03:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "ArcturianWarrior999"
+    labels:
+      - "dependencies"
+      - "rust"
+    allow:
+      - dependency-type: "all"
+
+  # Node.js/pnpm dependencies
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "04:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "ArcturianWarrior999"
+    labels:
+      - "dependencies"
+      - "javascript"
+    allow:
+      - dependency-type: "all"
+
+  # Python dependencies
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "05:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "ArcturianWarrior999"
+    labels:
+      - "dependencies"
+      - "python"
+    allow:
+      - dependency-type: "all"
+
+  # Go dependencies
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "06:00"
+    open-pull-requests-limit: 10
+    reviewers:
+      - "ArcturianWarrior999"
+    labels:
+      - "dependencies"
+      - "go"
+    allow:
+      - dependency-type: "all"
+
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "tuesday"
+      time: "03:00"
+    open-pull-requests-limit: 5
+    reviewers:
+      - "ArcturianWarrior999"
+    labels:
+      - "dependencies"
+      - "github-actions"
+    allow:
+      - dependency-type: "all"