Upgrade to Ruby 2.6.3 and bundle update

.ruby-version

@@ -1 +1 @@
-2.6.0
+2.6.3

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.6.0'
+ruby '2.6.3'
 
 gem 'rake'
 gem 'thor'

Gemfile.lock

@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.2)
+    activesupport (5.2.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    backports (3.11.4)
-    better_errors (2.5.0)
+    backports (3.15.0)
+    better_errors (2.5.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -17,33 +17,33 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.4)
+    concurrent-ruby (1.1.5)
     daemons (1.3.1)
     erubi (1.8.0)
     ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
-    exifr (1.3.5)
-    ffi (1.10.0)
-    fspath (3.1.0)
-    highline (2.0.0)
-    html-pipeline (2.10.0)
+    exifr (1.3.6)
+    ffi (1.11.1)
+    fspath (3.1.1)
+    highline (2.0.2)
+    html-pipeline (2.11.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    i18n (1.5.2)
+    i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    image_optim (0.26.3)
+    image_optim (0.26.4)
       exifr (~> 1.2, >= 1.2.2)
       fspath (~> 3.0)
       image_size (>= 1.5, < 3)
       in_threads (~> 1.3)
       progress (~> 3.0, >= 3.0.1)
-    image_optim_pack (0.5.1.20190105)
+    image_optim_pack (0.5.3)
       fspath (>= 2.1, < 4)
       image_optim (~> 0.19)
-    image_size (2.0.0)
-    in_threads (1.5.1)
+    image_size (2.0.1)
+    in_threads (1.5.2)
     method_source (0.9.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -51,19 +51,19 @@ GEM
     mustermann (1.0.3)
     net-sftp (3.0.0.beta1)
       net-ssh (>= 5.0.0, < 6.0.0)
-    net-ssh (5.1.0)
-    newrelic_rpm (5.7.0.350)
-    nokogiri (1.10.1)
+    net-ssh (5.2.0)
+    newrelic_rpm (6.5.0.357)
+    nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     options (2.3.2)
-    progress (3.5.0)
+    progress (3.5.1)
     progress_bar (1.3.0)
       highline (>= 1.6, < 3)
       options (~> 2.3.0)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.6)
+    rack (2.0.7)
     rack-protection (2.0.5)
       rack
     rack-ssl-enforcer (0.2.9)
@@ -74,7 +74,7 @@ GEM
     rb-inotify (0.10.0)
       ffi (~> 1.0)
     rr (1.2.1)
-    sass (3.7.3)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -96,10 +96,10 @@ GEM
       rack (> 1, < 3)
     sprockets-helpers (1.2.1)
       sprockets (>= 2.2)
-    strings (0.1.4)
-      strings-ansi (~> 0.1.0)
-      unicode-display_width (~> 1.4.0)
-      unicode_utils (~> 1.4.0)
+    strings (0.1.5)
+      strings-ansi (~> 0.1)
+      unicode-display_width (~> 1.5)
+      unicode_utils (~> 1.4)
     strings-ansi (0.1.0)
     thin (1.7.2)
       daemons (~> 1.0, >= 1.0.9)
@@ -108,19 +108,19 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.9)
-    tty-pager (0.12.0)
+    tty-pager (0.12.1)
       strings (~> 0.1.4)
       tty-screen (~> 0.6)
       tty-which (~> 0.4)
-    tty-screen (0.6.5)
-    tty-which (0.4.0)
+    tty-screen (0.7.0)
+    tty-which (0.4.1)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.4.1)
+    unicode-display_width (1.6.0)
     unicode_utils (1.4.0)
     unix_utils (0.0.15)
     yajl-ruby (1.4.1)
@@ -162,7 +162,7 @@ DEPENDENCIES
   yajl-ruby
 
 RUBY VERSION
-   ruby 2.6.0p0
+   ruby 2.6.3p62
 
 BUNDLED WITH
-   1.17.2
+   1.17.3