Update gems

Gemfile.lock

@@ -27,13 +27,13 @@ GEM
     exifr (1.3.2)
     ffi (1.9.18)
     fspath (3.1.0)
-    highline (1.7.8)
+    highline (1.7.10)
     html-pipeline (2.7.1)
       activesupport (>= 2)
       nokogiri (>= 1.4)
     i18n (0.9.1)
       concurrent-ruby (~> 1.0)
-    image_optim (0.25.0)
+    image_optim (0.26.0)
       exifr (~> 1.2, >= 1.2.2)
       fspath (~> 3.0)
       image_size (~> 1.5)
@@ -43,7 +43,7 @@ GEM
       fspath (>= 2.1, < 4)
       image_optim (~> 0.19)
     image_size (1.5.0)
-    in_threads (1.4.0)
+    in_threads (1.5.0)
     method_source (0.9.0)
     mini_portile2 (2.3.0)
     minitest (5.10.3)
@@ -56,15 +56,15 @@ GEM
     progress_bar (1.1.0)
       highline (~> 1.6)
       options (~> 2.3.0)
-    pry (0.11.2)
+    pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     rack (2.0.3)
     rack-protection (2.0.0)
       rack
-    rack-test (0.7.0)
+    rack-test (0.8.2)
       rack (>= 1.0, < 3)
-    rake (12.2.1)
+    rake (12.3.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -102,7 +102,7 @@ GEM
       tty-screen (~> 0.6.0)
       tty-which (~> 0.3.0)
       verse (~> 0.5.0)
-    tty-screen (0.6.2)
+    tty-screen (0.6.3)
     tty-which (0.3.0)
     typhoeus (1.3.0)
       ethon (>= 0.9.0)
@@ -155,4 +155,4 @@ RUBY VERSION
    ruby 2.4.2p198
 
 BUNDLED WITH
-   1.15.4
+   1.16.0