Bump rubyzip from 0.9.9 to 1.3.0 in /edx_specs

Bumps [rubyzip](https://github.com/rubyzip/rubyzip) from 0.9.9 to 1.3.0.
- [Release notes](https://github.com/rubyzip/rubyzip/releases)
- [Changelog](https://github.com/rubyzip/rubyzip/blob/master/Changelog.md)
- [Commits](rubyzip/rubyzip@0.9.9...v1.3.0)

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

Author: dependabot[bot]

edx_specs/Gemfile.lock

@@ -56,7 +56,7 @@ GEM
     rspec-mocks (2.7.0)
     rspec-steps (0.0.8)
       rspec (>= 2.6)
-    rubyzip (0.9.9)
+    rubyzip (1.3.0)
     selenium-webdriver (2.25.0)
       childprocess (>= 0.2.5)
       libwebsocket (~> 0.1.3)