Bump @openzeppelin/contracts in /examples/called-on-contract (TrueFiE…

…ng#560)

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 3.4.1 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](https://github.com/OpenZeppelin/openzeppelin-contracts/commits/v3.4.2)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/called-on-contract/package.json

@@ -22,6 +22,6 @@
     "mocha": "^7.1.2",
     "ts-node": "^8.9.1",
     "typescript": "^3.8.3",
-    "@openzeppelin/contracts": "^3.0.0"
+    "@openzeppelin/contracts": "^3.4.2"
   }
 }

examples/called-on-contract/yarn.lock

@@ -446,10 +446,10 @@
     "@ethersproject/properties" "^5.3.0"
     "@ethersproject/strings" "^5.3.0"
 
-"@openzeppelin/contracts@^3.0.0":
-  version "3.4.1"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.4.1.tgz#03c891fec7f93be0ae44ed74e57a122a38732ce7"
-  integrity sha512-cUriqMauq1ylzP2TxePNdPqkwI7Le3Annh4K9rrpvKfSBB/bdW+Iu1ihBaTIABTAAJ85LmKL5SSPPL9ry8d1gQ==
+"@openzeppelin/contracts@^3.4.2":
+  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"