Bump bootstrap from 4.0.0 to 4.3.1

Bumps [bootstrap](https://github.com/twbs/bootstrap-rubygem) from 4.0.0 to 4.3.1.
- [Release notes](https://github.com/twbs/bootstrap-rubygem/releases)
- [Changelog](https://github.com/twbs/bootstrap-rubygem/blob/master/CHANGELOG.md)
- [Commits](twbs/bootstrap-rubygem@v4.0.0...v4.3.1)

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

Author: dependabot[bot]

Gemfile

@@ -27,7 +27,7 @@ gem 'jbuilder', '~> 2.5'
 # gem 'capistrano-rails', group: :development
 
 # Use bootstrap
-gem 'bootstrap', '~> 4.0.0'
+gem 'bootstrap', '~> 4.3.1'
 
 # For implement url splug
 gem 'friendly_id', '~> 5.1.0'

Gemfile.lock

@@ -39,13 +39,13 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     arel (7.1.4)
-    autoprefixer-rails (8.6.0)
+    autoprefixer-rails (9.7.6)
       execjs
     bindex (0.5.0)
-    bootstrap (4.0.0)
-      autoprefixer-rails (>= 6.0.3)
-      popper_js (>= 1.12.9, < 2)
-      sass (>= 3.5.2)
+    bootstrap (4.3.1)
+      autoprefixer-rails (>= 9.1.0)
+      popper_js (>= 1.14.3, < 2)
+      sassc-rails (>= 2.0.0)
     builder (3.2.3)
     byebug (10.0.2)
     coffee-rails (4.2.2)
@@ -59,7 +59,7 @@ GEM
     crass (1.0.4)
     erubis (2.7.0)
     execjs (2.7.0)
-    ffi (1.9.25)
+    ffi (1.12.2)
     friendly_id (5.1.0)
       activerecord (>= 4.0.0)
     globalid (0.4.1)
@@ -73,6 +73,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
+    libv8 (3.16.14.19)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -89,7 +90,8 @@ GEM
     nio4r (2.3.1)
     nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
-    popper_js (1.12.9)
+    pg (1.2.3)
+    popper_js (1.16.0)
     puma (3.11.4)
     rack (2.0.5)
     rack-test (0.6.3)
@@ -119,9 +121,10 @@ GEM
       thor (>= 0.18.1, < 2.0)
     rake (12.3.1)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    sass (3.5.6)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    ref (2.0.0)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -132,6 +135,14 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.3.0)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
     spring (2.0.2)
       activesupport (>= 4.2)
     spring-watcher-listen (2.0.1)
@@ -145,6 +156,9 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     sqlite3 (1.3.13)
+    therubyracer (0.12.3)
+      libv8 (~> 3.16.14.15)
+      ref
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
@@ -168,19 +182,21 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bootstrap (~> 4.0.0)
+  bootstrap (~> 4.3.1)
   byebug
   coffee-rails (~> 4.2)
   friendly_id (~> 5.1.0)
   jbuilder (~> 2.5)
   jquery-rails
   listen (~> 3.0.5)
+  pg
   puma (~> 3.0)
-  rails (~> 5.0.0, >= 5.0.0.1)
+  rails (~> 5.0.0)
   sass-rails (~> 5.0)
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3
+  therubyracer
   turbolinks (~> 5)
   tzinfo-data
   uglifier (>= 1.3.0)