Bump bootstrap-sass from 3.2.0.2 to 3.4.1

Bumps [bootstrap-sass](https://github.com/twbs/bootstrap-sass) from 3.2.0.2 to 3.4.1.
- [Release notes](https://github.com/twbs/bootstrap-sass/releases)
- [Changelog](https://github.com/twbs/bootstrap-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/twbs/bootstrap-sass/commits/v3.4.1)

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

Author: dependabot[bot]

Gemfile

@@ -46,7 +46,7 @@ gem 'lograge-sql'
 gem 'awesome_print'
 gem 'haml-rails'
 gem 'simple_form'
-gem 'bootstrap-sass', '~> 3.3.6'
+gem 'bootstrap-sass', '~> 3.4.1'
 gem 'autoprefixer-rails'
 gem 'jquery-ui-rails'
 gem 'bootstrap-datepicker-rails'

Gemfile.lock

@@ -107,9 +107,9 @@ GEM
       debug_inspector (>= 0.0.1)
     bootstrap-datepicker-rails (1.9.0.1)
       railties (>= 3.0)
-    bootstrap-sass (3.3.7)
+    bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
-      sass (>= 3.3.4)
+      sassc (>= 2.0.0)
     builder (3.2.4)
     byebug (11.1.3)
     cancancan (3.4.0)
@@ -356,6 +356,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     savon (2.13.0)
       akami (~> 1.2)
       builder (>= 2.1.2)
@@ -434,7 +436,7 @@ DEPENDENCIES
   better_errors
   binding_of_caller
   bootstrap-datepicker-rails
-  bootstrap-sass (~> 3.3.6)
+  bootstrap-sass (~> 3.4.1)
   byebug
   cancancan
   carrierwave-aws (~> 1.1)