Update dependency middleman to ~>4.3.0 (#105)

Author: renovate[bot]

docs/Gemfile

@@ -2,7 +2,7 @@ ruby '>=2.3.1'
 source 'https://rubygems.org'
 
 # Middleman
-gem 'middleman', '~>4.2.1'
+gem 'middleman', '~>4.3.0'
 gem 'middleman-syntax', '~> 3.0.0'
 gem 'middleman-autoprefixer', '~> 2.10.0'
 gem "middleman-livereload", "~> 3.4.3"

docs/Gemfile.lock

@@ -15,8 +15,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    compass-import-once (1.0.5)
-      sass (>= 3.2, < 3.5)
     concurrent-ruby (1.1.5)
     contracts (0.13.0)
     dotenv (2.7.5)
@@ -28,38 +26,37 @@ GEM
     execjs (2.7.0)
     fast_blank (1.0.0)
     fastimage (2.1.7)
-    ffi (1.11.2)
-    haml (5.0.4)
+    ffi (1.11.3)
+    haml (5.1.2)
       temple (>= 0.8.0)
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
     hashie (3.6.0)
     http_parser.rb (0.6.0)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     kramdown (1.17.0)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    memoist (0.16.1)
-    middleman (4.2.1)
+    memoist (0.16.2)
+    middleman (4.3.5)
       coffee-script (~> 2.2)
-      compass-import-once (= 1.0.5)
       haml (>= 4.0.5)
       kramdown (~> 1.2)
-      middleman-cli (= 4.2.1)
-      middleman-core (= 4.2.1)
-      sass (>= 3.4.0, < 4.0)
+      middleman-cli (= 4.3.5)
+      middleman-core (= 4.3.5)
     middleman-autoprefixer (2.10.1)
       autoprefixer-rails (~> 9.1)
       middleman-core (>= 3.3.3)
-    middleman-cli (4.2.1)
+    middleman-cli (4.3.5)
       thor (>= 0.17.0, < 2.0)
-    middleman-core (4.2.1)
+    middleman-core (4.3.5)
       activesupport (>= 4.2, < 5.1)
       addressable (~> 2.3)
       backports (~> 3.6)
-      bundler (~> 1.1)
+      bundler
       contracts (~> 0.13.0)
       dotenv
       erubis
@@ -68,15 +65,15 @@ GEM
       fastimage (~> 2.0)
       hamster (~> 3.0)
       hashie (~> 3.4)
-      i18n (~> 0.7.0)
+      i18n (~> 0.9.0)
       listen (~> 3.0.0)
       memoist (~> 0.14)
       padrino-helpers (~> 0.13.0)
       parallel
       rack (>= 1.4.5, < 3)
-      sass (>= 3.4)
+      sassc (~> 2.0)
       servolux
-      tilt (~> 2.0)
+      tilt (~> 2.0.9)
       uglifier (~> 3.0)
     middleman-livereload (3.4.6)
       em-websocket (~> 0.5.1)
@@ -98,7 +95,7 @@ GEM
       tilt (>= 1.4.1, < 3)
     padrino-support (0.13.3.4)
       activesupport (>= 3.1)
-    parallel (1.19.0)
+    parallel (1.19.1)
     public_suffix (4.0.1)
     rack (2.0.8)
     rack-livereload (0.3.17)
@@ -108,13 +105,14 @@ GEM
       ffi (~> 1.0)
     redcarpet (3.4.0)
     rouge (2.0.7)
-    sass (3.4.25)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     servolux (0.13.0)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    temple (0.8.0)
-    thor (0.20.3)
+    temple (0.8.2)
+    thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
     tzinfo (1.2.5)
@@ -126,7 +124,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  middleman (~> 4.2.1)
+  middleman (~> 4.3.0)
   middleman-autoprefixer (~> 2.10.0)
   middleman-livereload (~> 3.4.3)
   middleman-sprockets (~> 4.1.0)