Bump rest-client from 1.7.3 to 1.8.0

Bumps [rest-client](https://github.com/rest-client/rest-client) from 1.7.3 to 1.8.0.
- [Release notes](https://github.com/rest-client/rest-client/releases)
- [Changelog](https://github.com/rest-client/rest-client/blob/master/history.md)
- [Commits](rest-client/rest-client@v1.7.3...v1.8.0)

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

Gemfile.lock

@@ -23,21 +23,26 @@ GEM
       safe_yaml (~> 1.0.0)
     diff-lcs (1.2.5)
     docile (1.1.5)
+    domain_name (0.5.20190701)
+      unf (>= 0.0.5, < 1.0.0)
     faraday (0.17.3)
       multipart-post (>= 1.2, < 3)
     hashie (4.1.0)
+    http-cookie (1.0.3)
+      domain_name (~> 0.5)
     json (2.3.0)
     method_source (0.8.2)
-    mime-types (2.4.3)
+    mime-types (2.99.3)
     multi_json (1.11.0)
     multipart-post (2.1.1)
-    netrc (0.10.3)
+    netrc (0.11.0)
     pry (0.10.1)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
     rake (10.4.2)
-    rest-client (1.7.3)
+    rest-client (1.8.0)
+      http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
     rspec (3.2.0)
@@ -64,6 +69,9 @@ GEM
       tins (~> 1.0)
     thor (0.19.1)
     tins (1.3.5)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.7)
     webmock (1.17.4)
       addressable (>= 2.2.7)
       crack (>= 0.3.2)