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>

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
   "license": "LGPL-3.0-only",
   "repository": "https://github.com/zeriontech/defi-sdk",
   "dependencies": {
-    "@openzeppelin/contracts": "4.4.0"
+    "@openzeppelin/contracts": "4.7.3"
   },
   "devDependencies": {
     "@babel/core": "7.17.5",