Bump extend in /packages/serverless-plugin/integration-test

Bumps [extend](https://github.com/justmoon/node-extend) from 3.0.1 to 3.0.2.
- [Release notes](https://github.com/justmoon/node-extend/releases)
- [Changelog](https://github.com/justmoon/node-extend/blob/master/CHANGELOG.md)
- [Commits](justmoon/node-extend@v3.0.1...v3.0.2)

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

Author: dependabot[bot]

packages/serverless-plugin/integration-test/yarn.lock

@@ -564,8 +564,8 @@ exit-hook@^1.0.0:
   resolved "https://registry.yarnpkg.com/exit-hook/-/exit-hook-1.1.1.tgz#f05ca233b48c05d54fff07765df8507e95c02ff8"
 
 extend@3, extend@^3.0.0, extend@~3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
 
 external-editor@^1.1.0:
   version "1.1.1"