Fix flaky aria-disabled tests (#621)

* Fix flaky aria-disabled tests

* Version bump: 9.2.2

---------

Co-authored-by: Versionator <dev@launchpadlab.com>

Author: josiasds

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@launchpadlab/lp-components",
-  "version": "9.2.1",
+  "version": "9.2.2",
   "engines": {
     "node": "^18.12"
   },

test/forms/buttons/button.test.js

@@ -7,14 +7,14 @@ test('Button is aria-disabled when form is invalid', () => {
   render(<Button invalid={true}>Hi</Button>)
   const button = screen.getByRole('button')
 
-  expect(button).toHaveAttribute('aria-disabled')
+  expect(button).toHaveAttribute('aria-disabled', 'true')
 })
 
 test('Button is aria-disabled when form is pristine', () => {
   render(<Button pristine={true}>Hi</Button>)
   const button = screen.getByRole('button')
 
-  expect(button).toHaveAttribute('aria-disabled')
+  expect(button).toHaveAttribute('aria-disabled', 'true')
 })
 
 test('Button onClick is run when the form is not submitting, pristine, or invalid', async () => {