Enable eslint rule quote-props (#1795)

## Description:

Enable eslint rule `quote-props`

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

src/client/Cosmetics.ts

@@ -41,7 +41,7 @@ export async function handlePurchase(priceId: string) {
       method: "POST",
       headers: {
         "Content-Type": "application/json",
-        authorization: getAuthHeader(),
+        "authorization": getAuthHeader(),
       },
       body: JSON.stringify({
         priceId: priceId,