Bump @openzeppelin/contracts-upgradeable from 3.4.1 to 4.7.2

Bumps [@openzeppelin/contracts-upgradeable](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable) from 3.4.1 to 4.7.2.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/master/CHANGELOG.md)
- [Commits](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commits/v4.7.2)

---
updated-dependencies:
- dependency-name: "@openzeppelin/contracts-upgradeable"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -51,7 +51,7 @@
     "@nomiclabs/hardhat-truffle5": "^2.0.3",
     "@nomiclabs/hardhat-web3": "^2.0.0",
     "@openzeppelin/contracts": "3.4.1",
-    "@openzeppelin/contracts-upgradeable": "3.4.1",
+    "@openzeppelin/contracts-upgradeable": "4.7.2",
     "@openzeppelin/hardhat-upgrades": "^1.12.0",
     "@openzeppelin/test-helpers": "^0.5.15",
     "chai": "^4.3.4",

yarn.lock

@@ -634,10 +634,10 @@
     find-up "^4.1.0"
     fs-extra "^8.1.0"
 
-"@openzeppelin/contracts-upgradeable@3.4.1":
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-3.4.1.tgz#38dfdfa86fda0a088c6fcdebe6870cfaf897b471"
-  integrity sha512-wBGlUzEkOxcj/ghtcF2yKc8ZYh+PTUtm1mK38zoENulJ6aplij7eH8quo3lMugfzPJy+V6V5qI8QhdQmCn7hkQ==
+"@openzeppelin/contracts-upgradeable@4.7.2":
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.7.2.tgz#414096e21f048200cbb7ad4fe4c6de2e822513bf"
+  integrity sha512-3dgc6qVmFch/uOmlmKnw5/v3JxwXcZD4T10/9CI1OUbX8AqjoZrBGKfxN1z3QxnIXRU/X31/BItJezJSDDTe7Q==
 
 "@openzeppelin/contracts@3.4.1":
   version "3.4.1"