build: do not run workflow for dependabot PRs

---
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
---

Author: Planeshifter

.github/workflows/first_time_greeting.yml

@@ -43,6 +43,12 @@ jobs:
     # Define the type of virtual host machine:
     runs-on: ubuntu-latest
 
+    # Only run this job if the pull request did not have label `automated-pr` and is not from bots:
+    if: >
+      contains(github.event.pull_request.labels.*.name, 'automated-pr') == false &&
+      github.event.pull_request.user.login != 'stdlib-bot' &&
+      github.event.pull_request.user.login != 'dependabot[bot]'
+
     # Define the sequence of job steps...
     steps: