Bump hoek from 4.2.0 to 4.2.1

Bumps [hoek](https://github.com/hapijs/hoek) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/hapijs/hoek/releases)
- [Changelog](https://github.com/hapijs/hoek/blob/master/CHANGELOG.md)
- [Commits](hapijs/hoek@v4.2.0...v4.2.1)

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

Author: dependabot[bot]

yarn.lock

@@ -4377,7 +4377,7 @@ expect@^24.8.0:
 
 express@^4.16.3:
   version "4.16.3"
-  resolved "http://registry.npmjs.org/express/-/express-4.16.3.tgz#6af8a502350db3246ecc4becf6b5a34d22f7ed53"
+  resolved "https://registry.npmjs.org/express/-/express-4.16.3.tgz#6af8a502350db3246ecc4becf6b5a34d22f7ed53"
   integrity sha1-avilAjUNsyRuzEvs9rWjTSL37VM=
   dependencies:
     accepts "~1.3.5"
@@ -5160,9 +5160,9 @@ hmac-drbg@^1.0.0:
     minimalistic-crypto-utils "^1.0.1"
 
 hoek@4.x.x:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
-  integrity sha512-v0XCLxICi9nPfYrS9RL8HbYnXi9obYAeLbSP00BmnZwCK9+Ih9WOjoZ8YoHCoav2csqn4FOz4Orldsy2dmDwmQ==
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.1.tgz#9634502aa12c445dd5a7c5734b572bb8738aacbb"
+  integrity sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==
 
 hoopy@^0.1.2:
   version "0.1.4"