Merge pull request #67 from mozilla/dependabot/npm_and_yarn/extend-3.0.2

Bump extend from 3.0.1 to 3.0.2

yarn.lock

@@ -1428,8 +1428,8 @@ extend-shallow@^2.0.1:
     is-extendable "^0.1.0"
 
 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"
 
 extglob@^0.3.1:
   version "0.3.2"