Bump @openzeppelin/contracts from 3.4.0-solc-0.7 to 3.4.2

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 3.4.0-solc-0.7 to 3.4.2.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md)
- [Commits](OpenZeppelin/openzeppelin-contracts@v3.4.0-solc-0.7...v3.4.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

contracts/package.json

@@ -58,6 +58,6 @@
     "read-variable": "ts-node scripts/read-variable.ts"
   },
   "dependencies": {
-    "@openzeppelin/contracts": "3.4.0-solc-0.7"
+    "@openzeppelin/contracts": "3.4.2"
   }
 }

yarn.lock

@@ -703,10 +703,10 @@
     "@types/sinon-chai" "^3.2.3"
     "@types/web3" "1.0.19"
 
-"@openzeppelin/[email protected].0-solc-0.7":
-  version "3.4.0-solc-0.7"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.0-solc-0.7.tgz#c4fbd1b761714745c4bce6fc97e8b44d4c29d5b9"
-  integrity sha512-bJz1YgmeKRYVnYZedYSiy5/YmaYTxOhb76ftCseN1z2r4DK7PwCGvRCF2fRavTxAmGkIC/Q5zSy/Dr3OerPw0w==
+"@openzeppelin/[email protected].2":
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.2.tgz#d81f786fda2871d1eb8a8c5a73e455753ba53527"
+  integrity sha512-z0zMCjyhhp4y7XKAcDAi3Vgms4T2PstwBdahiO0+9NaGICQKjynK3wduSRplTgk4LXmoO1yfDGO5RbjKYxtuxA==
 
 "@resolver-engine/core@^0.3.3":
   version "0.3.3"
@@ -10625,7 +10625,7 @@ yocto-queue@^0.1.0:
   integrity sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==
 
 "zksync@link:sdk/zksync.js":
-  version "0.11.1"
+  version "0.11.3"
   dependencies:
     axios "^0.21.1"
     websocket "^1.0.30"