Bump formtastic from 4.0.0 to 5.0.0

Bumps [formtastic](https://github.com/justinfrench/formtastic) from 4.0.0 to 5.0.0.
- [Changelog](https://github.com/formtastic/formtastic/blob/master/CHANGELOG.md)
- [Commits](formtastic/formtastic@4.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: formtastic
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Gemfile.lock

@@ -140,7 +140,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.2.3)
+    concurrent-ruby (1.3.1)
     connection_pool (2.4.1)
     crack (0.4.4)
     crass (1.0.6)
@@ -206,8 +206,8 @@ GEM
     font-awesome-rails (4.7.0.5)
       railties (>= 3.2, < 6.1)
     formatador (0.2.5)
-    formtastic (4.0.0)
-      actionpack (>= 5.2.0)
+    formtastic (5.0.0)
+      actionpack (>= 6.0.0)
     friendly_id (5.4.1)
       activerecord (>= 4.0.0)
     globalid (1.1.0)
@@ -284,7 +284,7 @@ GEM
       nokogiri (~> 1)
       rake
     mini_mime (1.1.5)
-    mini_portile2 (2.8.6)
+    mini_portile2 (2.8.7)
     minitest (5.23.1)
     msgpack (1.7.2)
     multi_json (1.15.0)