chore(deps): update dependency @openzeppelin/contracts to v4.9.1

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
 		"@nomiclabs/hardhat-ethers": "2.2.3",
 		"@nomiclabs/hardhat-etherscan": "3.1.7",
 		"@nomiclabs/hardhat-waffle": "2.0.6",
-		"@openzeppelin/contracts": "4.8.2",
+		"@openzeppelin/contracts": "4.9.1",
 		"@types/chai": "4.3.5",
 		"@types/dotenv": "8.2.0",
 		"@types/mocha": "10.0.1",

yarn.lock

@@ -989,10 +989,10 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.9.1.tgz#03e33b8059ce43884995e69e4479f5a7f084b404"
   integrity sha512-UZf5/VdaBA/0kxF7/gg+2UrC8k+fbgiUM0Qw1apAhwpBWBxULbsHw0ZRMgT53nd6N8hr53XFjhcWNeTRGIiCVw==
 
-"@openzeppelin/contracts@4.8.2":
-  version "4.8.2"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.8.2.tgz#d815ade0027b50beb9bcca67143c6bcc3e3923d6"
-  integrity sha512-kEUOgPQszC0fSYWpbh2kT94ltOJwj1qfT2DWo+zVttmGmf97JZ99LspePNaeeaLhCImaHVeBbjaQFZQn7+Zc5g==
+"@openzeppelin/contracts@4.9.1":
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.9.1.tgz#afa804d2c68398704b0175acc94d91a54f203645"
+  integrity sha512-aLDTLu/If1qYIFW5g4ZibuQaUsFGWQPBq1mZKp/txaebUnGHDmmiBhRLY1tDNedN0m+fJtKZ1zAODS9Yk+V6uA==
 
 "@openzeppelin/hardhat-upgrades@^1.22.1":
   version "1.27.0"