refactor: Replace linting configurations

The previous package was outdated, preventing us from updating TS.
This one also lints YAML and JSON,
and applies many more rules to the test files,
explaining all the changes in this PR.

scripts/finalizeRelease.ts

@@ -18,8 +18,10 @@ import { version } from '../package.json';
  * and then pushes commit and tag.
  */
 async function commitAndTag(): Promise<void> {
+  // eslint-disable-next-line ts/naming-convention
   await simpleGit().commit([], 'CHANGELOG.md', { '--amend': null, '--no-edit': null, '--no-verify': null });
   await simpleGit().addAnnotatedTag(`v${version}`, `Release Version ${version}`);
+  // eslint-disable-next-line ts/naming-convention
   await simpleGit().push({ '--follow-tags': null });
 }