Bump rest-client from 2.0.2 to 2.1.0 (#1409)

Bumps [rest-client](https://github.com/rest-client/rest-client) from 2.0.2 to 2.1.0.
- [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@v2.0.2...v2.1.0)

---
updated-dependencies:
- dependency-name: rest-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -91,7 +91,7 @@ GEM
       activerecord
     deprecate (0.0.0)
     diff-lcs (1.3)
-    domain_name (0.5.20170404)
+    domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.10.0)
     erubis (2.7.0)
@@ -126,7 +126,8 @@ GEM
     graphql (1.9.9)
     hashdiff (1.0.1)
     hashie (4.1.0)
-    http-cookie (1.0.3)
+    http-accept (1.7.0)
+    http-cookie (1.0.5)
       domain_name (~> 0.5)
     httparty (0.20.0)
       mime-types (~> 3.0)
@@ -260,7 +261,8 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rest-client (2.0.2)
+    rest-client (2.1.0)
+      http-accept (>= 1.7.0, < 2.0)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
@@ -352,7 +354,7 @@ GEM
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.4)
+    unf_ext (0.0.8.2)
     unicode-display_width (1.7.0)
     web-console (3.7.0)
       actionview (>= 5.0)