Bump twitter from 6.2.0 to 7.0.0 (#155)

Bumps [twitter](https://github.com/sferik/twitter) from 6.2.0 to 7.0.0.
- [Release notes](https://github.com/sferik/twitter/releases)
- [Changelog](https://github.com/sferik/twitter/blob/master/CHANGELOG.md)
- [Commits](sferik/twitter-ruby@v6.2.0...v7.0.0)

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

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

Gemfile.lock

@@ -177,7 +177,7 @@ GEM
       warden (~> 1.2.3)
     diff-lcs (1.3)
     docile (1.3.1)
-    domain_name (0.5.20180417)
+    domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.7.6)
     dotenv-rails (2.7.6)
@@ -207,6 +207,9 @@ GEM
     faraday (0.15.2)
       multipart-post (>= 1.2, < 3)
     ffi (1.14.2)
+    ffi-compiler (1.0.1)
+      ffi (>= 1.0.0)
+      rake
     foreman (0.87.2)
     formatador (0.2.5)
     formtastic (3.1.5)
@@ -263,14 +266,16 @@ GEM
       activesupport (>= 4.1)
     hashdiff (0.3.7)
     hitimes (2.0.0)
-    http (3.3.0)
+    http (4.4.1)
       addressable (~> 2.3)
       http-cookie (~> 1.0)
-      http-form_data (~> 2.0)
-      http_parser.rb (~> 0.6.0)
+      http-form_data (~> 2.2)
+      http-parser (~> 1.2.0)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    http-form_data (2.1.1)
+    http-form_data (2.3.0)
+    http-parser (1.2.2)
+      ffi-compiler
     http_parser.rb (0.6.0)
     httpclient (2.8.3)
     i18n (1.8.7)
@@ -613,11 +618,11 @@ GEM
       hitimes
     treetop (1.6.10)
       polyglot (~> 0.3)
-    twitter (6.2.0)
+    twitter (7.0.0)
       addressable (~> 2.3)
       buftok (~> 0.2.0)
       equalizer (~> 0.0.11)
-      http (~> 3.0)
+      http (~> 4.0)
       http-form_data (~> 2.0)
       http_parser.rb (~> 0.6.0)
       memoizable (~> 0.4.0)
@@ -631,7 +636,7 @@ GEM
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.5)
+    unf_ext (0.0.7.7)
     unicode-display_width (1.4.0)
     unicode_utils (1.4.0)
     unicorn (5.4.0)