ci: Use taiki-e/github-actions/.github/workflows/gen.yml reusable workflow

.github/workflows/manifest.yml

@@ -33,47 +33,18 @@ concurrency:
 
 jobs:
   manifest:
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
+    uses: taiki-e/github-actions/.github/workflows/gen.yml@main
     permissions:
       contents: read
-      pull-requests: write # for gh pr review --approve
-    steps:
-      - uses: taiki-e/checkout-action@v1
-      - uses: taiki-e/github-actions/install-rust@stable
-      - name: Generate Cargo.lock
-        run: cargo update
-      - uses: Swatinem/rust-cache@v2
-        with:
-          cache-all-crates: 'true'
-      - run: tools/manifest.sh
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Handle diff
-        id: diff
-        run: tools/ci/manifest.sh
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'push' && github.ref == 'refs/heads/main')
-      - run: git add -N . && git -c color.ui=always diff --exit-code
-      - id: create-pull-request
-        uses: peter-evans/create-pull-request@v8
-        with:
-          title: Update manifest
-          body: |
-            Auto-generated by CI using [create-pull-request](https://github.com/peter-evans/create-pull-request).
-
-            This will be auto-merged when CI has passed because this is an auto-generated PR in a defined format and is usually considered no additional review is required.
-          branch: update-manifest
-          token: ${{ secrets.CREATE_PR_TOKEN }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false'
-      - name: Enable auto-merge for auto-generated PR
-        run: gh pr merge --rebase --auto "${PR_NUMBER:?}"
-        env:
-          GITHUB_TOKEN: ${{ secrets.CREATE_PR_TOKEN }}
-          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && steps.create-pull-request.outputs.pull-request-operation == 'created'
-      - name: Approve auto-generated PR for auto-merge
-        run: gh pr review --approve "${PR_NUMBER:?}"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && (steps.create-pull-request.outputs.pull-request-operation == 'created' || steps.create-pull-request.outputs.pull-request-operation == 'updated')
+      pull-requests: write # for gh pr edit --add-assignee / gh pr review --approve
+      repository-projects: read # for gh pr edit --add-assignee
+    secrets: inherit
+    with:
+      script: tools/manifest.sh
+      commit-script: tools/ci/manifest.sh
+      title: Update manifest
+      branch: update-manifest
+      automerge: true
+      install-rust: true
+      rust: stable
+      rust-cache: true