fix: drop support for Node 16, update linter, add JSDoc linting

[hudlow]

PR summary

PR Checklist

General checklist

Please make sure that your PR fulfills the following requirements:

• The commit message follows the Angular Commit Message Guidelines.
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• Dependencies have been updated as needed
• .secrets.baseline has been updated as needed
• npm run generate-utilities-docs has been run if needed

Checklist for adding a new validation rule:

• Added new validation rule definition (packages/ruleset/src/rules/*.js, index.js)
• If necessary, added new validation rule implementation (packages/ruleset/src/functions/*.js, updated index.js)
• Added new rule to default configuration (packages/ruleset/src/ibm-oas.js)
• Added tests for new rule (packages/ruleset/test/*.test.js)
• Added docs for new rule (docs/ibm-cloud-rules.md)
• Added scoring rubric entry for new rule (packages/validator/src/scoring-tool/rubric.js)

[dpopp07]

For the most part, this looks great! The one thing I don't understand are the copyright header changes. Are those needed? @hudlow will you remind me what the motivation there is?