Update dependency prettier to v2.8.7

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
 		"ethereum-waffle": "3.4.4",
 		"husky": "7.0.4",
 		"npm-run-all": "4.1.5",
-		"prettier": "2.8.3",
+		"prettier": "2.8.7",
 		"rimraf": "3.0.2",
 		"rollup": "2.79.1",
 		"rollup-plugin-dts": "4.2.3",

yarn.lock

@@ -6566,10 +6566,10 @@ prepend-http@^2.0.0:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
   integrity sha512-ravE6m9Atw9Z/jjttRUZ+clIXogdghyZAuWJ3qEzjT+jI/dL1ifAqhZeC5VHzQp1MSt1+jxKkFNemj/iO7tVUA==
 
-[email protected].3:
-  version "2.8.3"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.3.tgz#ab697b1d3dd46fb4626fbe2f543afe0cc98d8632"
-  integrity sha512-tJ/oJ4amDihPoufT5sM0Z1SKEuKay8LfVAMlbbhnnkvt6BUserZylqo2PN+p9KeljLr0OHa2rXHU1T8reeoTrw==
+[email protected].7:
+  version "2.8.7"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.7.tgz#bb79fc8729308549d28fe3a98fce73d2c0656450"
+  integrity sha512-yPngTo3aXUUmyuTjeTUT75txrf+aMh9FiD7q9ZE/i6r0bPb22g4FsE6Y338PQX1bmfy08i9QQCB7/rcUAVntfw==
 
 prettier@^2.1.2:
   version "2.8.1"