Extension automapping fix

[github-actions[bot]]

---

Error: Error while trying to collect info before merging extension_automapping_fix into master.

Error: missing --expose-gc
    at measureImport (file:///home/runner/work/importmap-node-module/importmap-node-module/script/performance/measure_import/measure_import.mjs:11:11)
    at generatePerformanceReport (file:///home/runner/work/importmap-node-module/importmap-node-module/script/performance/generate_performance_report.mjs?cache_busting=1633508507685:24:31)
    at async collectInfo (file:///home/runner/work/importmap-node-module/importmap-node-module/node_modules/@jsenv/performance-impact/src/reportPerformanceImpact.js:65:33)
    at async commentPrImpact (file:///home/runner/work/importmap-node-module/importmap-node-module/node_modules/@jsenv/github-pull-request-impact/src/commentGitHubPullRequestImpact.js:265:23)
    at async commentGitHubPullRequestImpact (file:///home/runner/work/importmap-node-module/importmap-node-module/node_modules/@jsenv/github-pull-request-impact/src/commentGitHubPullRequestImpact.js:90:12)

---

_{Generated by @jsenv/performance-impact during performance_impact#1311033303 on d717d03}

[codecov[bot]]

Codecov Report

Merging #43 (f955d89) into master (4ab6d68) will increase coverage by 0.05%. The diff coverage is 100.00%.

:exclamation: Current head f955d89 differs from pull request most recent head d717d03. Consider uploading reports for the commit d717d03 to get more accurate results