Bump @openzeppelin/contracts from 4.4.0 to 4.7.3

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 4.4.0 to 4.7.3.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md)
- [Commits](OpenZeppelin/openzeppelin-contracts@v4.4.0...v4.7.3)

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

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

package.json

@@ -29,7 +29,7 @@
   "homepage": "https://github.com/debridge-finance/debridge-contracts-v1#readme",
   "dependencies": {
     "@nomiclabs/hardhat-etherscan": "^2.1.8",
-    "@openzeppelin/contracts": "^4.3.2",
+    "@openzeppelin/contracts": "^4.7.3",
     "@openzeppelin/contracts-upgradeable": "^4.3.2",
     "@openzeppelin/test-helpers": "^0.5.13",
     "@types/delete-empty": "^3.0.2",

yarn.lock

@@ -2083,10 +2083,10 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.4.0.tgz#85161d87c840c5bce2b6ed0c727b407e774852ae"
   integrity sha512-hIEyWJHu7bDTv6ckxOaV+K3+7mVzhjtyvp3QSaz56Rk5PscXtPAbkiNTb3yz6UJCWHPWpxVyULVgZ6RubuFEZg==
 
-"@openzeppelin/contracts@^4.3.2":
-  version "4.4.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.4.0.tgz#4a1df71f736c31230bbbd634dfb006a756b51e6b"
-  integrity sha512-dlKiZmDvJnGRLHojrDoFZJmsQVeltVeoiRN7RK+cf2FmkhASDEblE0RiaYdxPNsUZa6mRG8393b9bfyp+V5IAw==
+"@openzeppelin/contracts@^4.7.3":
+  version "4.7.3"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.3.tgz#939534757a81f8d69cc854c7692805684ff3111e"
+  integrity sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw==
 
 "@openzeppelin/hardhat-upgrades@^1.21.0":
   version "1.21.0"