chore: update dependencies and ruby version (#121)

Author: adrianthedev

Diff for: spec/dummy/.ruby-version

@@ -1 +1 @@
-ruby-2.6.3
+ruby-2.6.4

Diff for: spec/dummy/yarn.lock

@@ -5926,7 +5926,7 @@ querystringify@^2.1.1:
   resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.1.1.tgz#60e5a5fd64a7f8bfa4d2ab2ed6fdf4c85bad154e"
   integrity sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA==
 
-randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
+randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5, randombytes@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
   integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
@@ -6356,9 +6356,11 @@ serialize-javascript@^2.1.2:
   integrity sha512-rs9OggEUF0V4jUSecXazOYsLfu7OGK2qIn3c7IPBiffz32XniEp/TX9Xmc9LQfK2nQ2QKHvZ2oygKUGU0lG4jQ==
 
 serialize-javascript@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-3.0.0.tgz#492e489a2d77b7b804ad391a5f5d97870952548e"
-  integrity sha512-skZcHYw2vEX4bw90nAr2iTTsz6x2SrHEnfxgKYmZlvJYBEZrvbKtobJWlQ20zczKb3bsHHXXTYt48zBA7ni9cw==
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-3.1.0.tgz#8bf3a9170712664ef2561b44b691eafe399214ea"
+  integrity sha512-JIJT1DGiWmIKhzRsG91aS6Ze4sFUrYbltlkg2onR5OrnNM02Kl/hnY/T4FN2omvyeBbQmMJv+K4cPOpGzOTFBg==
+  dependencies:
+    randombytes "^2.1.0"
 
 serve-index@^1.9.1:
   version "1.9.1"