Add uv ecosystem to dependabot and drop weekly lockfile workflow (#2919)

.github/dependabot.yml

@@ -1,9 +1,21 @@
 version: 2
 updates:
+  - package-ecosystem: "uv"
+    directory: "/"
+    schedule:
+      interval: monthly
+    cooldown:
+      default-days: 14
+    groups:
+      python-packages:
+        patterns:
+          - "*"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: monthly
+    cooldown:
+      default-days: 14
     groups:
       github-actions:
         patterns:

.github/workflows/weekly-lockfile-update.yml

@@ -1,43 +0,0 @@
-name: Weekly Lockfile Update
-
-on:
-  workflow_dispatch:
-  schedule:
-    # Every Thursday at 8:00 UTC
-    - cron: "0 8 * * 4"
-
-permissions:
-  contents: write
-  pull-requests: write
-
-jobs:
-  update-lockfile:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
-        with:
-          persist-credentials: false
-
-      - uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
-        with:
-          version: 0.9.5
-
-      - name: Update lockfile
-        run: |
-          echo '## Updated Dependencies' > pr_body.md
-          echo '' >> pr_body.md
-          echo '```' >> pr_body.md
-          uv lock --upgrade 2>&1 | tee -a pr_body.md
-          echo '```' >> pr_body.md
-
-      - name: Create pull request
-        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
-        with:
-          commit-message: "chore: update uv.lock with latest dependencies"
-          sign-commits: true
-          title: "chore: weekly dependency update"
-          body-path: pr_body.md
-          branch: weekly-lockfile-update
-          delete-branch: true
-          add-paths: uv.lock
-          labels: dependencies