Update dependency prettier to v2.8.6

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
 		"hardhat": "2.9.9",
 		"husky": "7.0.4",
 		"mocha": "9.2.2",
-		"prettier": "2.8.5",
+		"prettier": "2.8.6",
 		"prettier-plugin-solidity": "1.1.3",
 		"rimraf": "3.0.2",
 		"solhint": "3.3.8",

yarn.lock

@@ -6789,10 +6789,10 @@ prettier-plugin-solidity@1.1.3:
     semver "^7.3.8"
     solidity-comments-extractor "^0.0.7"
 
-prettier@2.8.5:
-  version "2.8.5"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.5.tgz#3dd8ae1ebddc4f6aa419c9b64d8c8319a7e0d982"
-  integrity sha512-3gzuxrHbKUePRBB4ZeU08VNkUcqEHaUaouNt0m7LGP4Hti/NuB07C7PPTM/LkWqXoJYJn2McEo5+kxPNrtQkLQ==
+prettier@2.8.6:
+  version "2.8.6"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.6.tgz#5c174b29befd507f14b83e3c19f83fdc0e974b71"
+  integrity sha512-mtuzdiBbHwPEgl7NxWlqOkithPyp4VN93V7VeHVWBF+ad3I5avc0RVDT4oImXQy9H/AqxA2NSQH8pSxHW6FYbQ==
 
 prettier@^1.14.3:
   version "1.19.1"