[Security] Bump extend from 3.0.1 to 3.0.2 in /build

Bumps [extend](https://github.com/justmoon/node-extend) from 3.0.1 to 3.0.2. **This update includes security fixes.**
- [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] <support@dependabot.com>

build/yarn.lock

@@ -1060,9 +1060,9 @@ extend-shallow@^3.0.0, extend-shallow@^3.0.2:
     is-extendable "^1.0.1"
 
 extend@^3.0.0, extend@~3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
-  integrity sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
+  integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
 
 extglob@^2.0.4:
   version "2.0.4"