Update dependency ethereum-waffle to v4

Author: renovate[bot]

package.json

@@ -49,7 +49,7 @@
 		"eslint": "7.32.0",
 		"eslint-config-prettier": "8.6.0",
 		"eslint-plugin-functional": "3.7.2",
-		"ethereum-waffle": "3.4.4",
+		"ethereum-waffle": "4.0.9",
 		"husky": "7.0.4",
 		"npm-run-all": "4.1.5",
 		"prettier": "2.8.3",