build: bump

Author: Omikorin

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/middleman/middleman.git
-  revision: 2bb004b864e3c19460e4ec0d8ff77e5739e17c3a
+  revision: 4e9a7dc4765e5912c64bda33ace473a9e01de64a
   specs:
     middleman (4.5.1)
       middleman-cli (= 4.5.1)
@@ -63,7 +63,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.3.4)
+    concurrent-ruby (1.3.5)
     connection_pool (2.5.0)
     contracts (0.17.2)
     dotenv (3.1.7)
@@ -123,7 +123,7 @@ GEM
       tilt (>= 1.4.1, < 3)
     padrino-support (0.15.3)
     parallel (1.26.3)
-    parser (3.3.6.0)
+    parser (3.3.7.0)
       ast (~> 2.4.1)
       racc
     parslet (2.0.0)
@@ -160,14 +160,14 @@ GEM
     sysexits (1.2.0)
     temple (0.10.3)
     thor (1.2.2)
-    tilt (2.5.0)
+    tilt (2.6.0)
     toml (0.3.0)
       parslet (>= 1.8.0, < 3.0.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     uglifier (4.2.1)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (3.1.3)
+    unicode-display_width (3.1.4)
       unicode-emoji (~> 4.0, >= 4.0.4)
     unicode-emoji (4.0.4)
     uri (1.0.2)