build: Ensure eslint-plugin-qunit 7.3.0 or later

The bug fix at platinumazure/eslint-plugin-qunit#231
was released in March 2022 as part of 7.3.0.

Fresh installs of eslint-config-wikimedia already expand `^7.2.0`
to 7.3.4, but I'd rather set a minimum so that the next propagation
of eslint-config-wikimedia will naturally update this, because
otherwise npm is conservative nowadays and only updates when forced
to or when doing a full rebuild after deleting one's lock file.

package.json

@@ -69,7 +69,7 @@
 		"eslint-plugin-mocha": "^9.0.0",
 		"eslint-plugin-no-jquery": "^2.7.0",
 		"eslint-plugin-node": "^11.1.0",
-		"eslint-plugin-qunit": "^7.2.0",
+		"eslint-plugin-qunit": "^7.3.0",
 		"eslint-plugin-unicorn": "^42.0.0",
 		"eslint-plugin-vue": "^8.7.1",
 		"eslint-plugin-wdio": "^7.19.4",