[chore] Add eslint-plugin-jsx-a11y to ESLint config

[ggdouglas]

Fixes #0000

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

Reviewers should focus on:

Screenshot

[changelog-app]

Generate changelog in packages/eslint-config/changelog/@unreleased

Type (Select exactly one)

• Feature (Adding new functionality)
• Improvement (Improving existing functionality)
• Fix (Fixing an issue with existing functionality)
• Break (Creating a new major version by breaking public APIs)
• Deprecation (Removing functionality in a non-breaking way)
• Migration (Automatically moving data/functionality to a new system)

Description

[chore] Add eslint-plugin-jsx-a11y to ESLint config

Check the box to generate changelog(s)

• Generate changelog entry

[svc-palantir-github]

Add `eslint-plugin-jsx-a11y` to ESLint config

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.