Bump webmock from 3.19.1 to 3.20.0

Bumps [webmock](https://github.com/bblimke/webmock) from 3.19.1 to 3.20.0.
- [Changelog](https://github.com/bblimke/webmock/blob/master/CHANGELOG.md)
- [Commits](bblimke/webmock@v3.19.1...v3.20.0)

---
updated-dependencies:
- dependency-name: webmock
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -134,7 +134,8 @@ GEM
     counter_culture (3.5.2)
       activerecord (>= 4.2)
       activesupport (>= 4.2)
-    crack (0.4.5)
+    crack (1.0.0)
+      bigdecimal
       rexml
     crass (1.0.6)
     css_parser (1.12.0)
@@ -206,7 +207,7 @@ GEM
     has_scope (0.8.2)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
-    hashdiff (1.0.1)
+    hashdiff (1.1.0)
     hashie (5.0.0)
     hcaptcha (7.1.0)
       json
@@ -541,7 +542,7 @@ GEM
       activesupport
       faraday (~> 2.0)
       faraday-follow_redirects
-    webmock (3.19.1)
+    webmock (3.20.0)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)