Bump @openzeppelin/test-environment from 0.1.2 to 0.1.3 (#2101)

Bumps [@openzeppelin/test-environment](https://github.com/OpenZeppelin/openzeppelin-test-environment) from 0.1.2 to 0.1.3.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-test-environment/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-test-environment/blob/master/CHANGELOG.md)
- [Commits](https://github.com/OpenZeppelin/openzeppelin-test-environment/compare/v0.1.2...v0.1.3)

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

package.json

@@ -47,7 +47,7 @@
     "@openzeppelin/cli": "^2.7.1",
     "@openzeppelin/gsn-helpers": "^0.2.3",
     "@openzeppelin/gsn-provider": "^0.1.9",
-    "@openzeppelin/test-environment": "^0.1.2",
+    "@openzeppelin/test-environment": "^0.1.3",
     "@openzeppelin/test-helpers": "^0.5.4",
     "chai": "^4.2.0",
     "eslint": "^6.5.1",