build: add reviewer checklist

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: na
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

.github/workflows/update_contributors.yml

@@ -105,6 +105,13 @@ jobs:
 
             -   updates the list of contributors
 
+            ## Reviewer Checklist
+
+            - [ ] For any **new contributors**, check if their full names are listed on their GitHub profile or in social links.
+            - [ ] If so, on the PR branch **update** the `.mailmap` file accordingly to ensure proper attribution.
+            - [ ] If updating `.mailmap`, **regenerate** the contributors file by running `make update-contributors` on the PR branch afterward.
+            - [ ] Approve the PR after verifying the changes.
+
           commit-message: 'docs: update list of contributors'
           committer: 'stdlib-bot <82920195+stdlib-bot@users.noreply.github.com>'
           signoff: true