Prepare 6.1.0 (#62)

- Update changelog
- Update dependencies
- Update ESLint config
- Install `eslint-plugin-jest` explicitly

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## Head
+## 6.1.0
 
 - Added: support for custom unfixable error messages.
 - Fixed: false negatives for `invalidOptionWarnings`.

getTestRule.js

@@ -1,8 +1,9 @@
 'use strict';
 
 const util = require('util');
-// eslint-disable-next-line node/no-unpublished-require -- Avoid auto-install of `stylelint` peer dependency.
-const { lint } = require('stylelint');
+
+// @ts-expect-error -- TS2614: Module '"stylelint"' has no exported member 'lint'. Did you mean to use 'import lint from "stylelint"' instead?
+const { lint } = require('stylelint'); // eslint-disable-line node/no-unpublished-require -- Avoid auto-install of `stylelint` peer dependency.
 
 /**
  * @typedef {import('.').TestCase} TestCase