bump pry-byebug

Gemfile.lock

@@ -70,8 +70,7 @@ GEM
       sass (~> 3.2)
     buftok (0.2.0)
     builder (3.2.2)
-    byebug (4.0.5)
-      columnize (= 0.9.0)
+    byebug (8.2.1)
     capybara (2.5.0)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -99,7 +98,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.9.1.1)
-    columnize (0.9.0)
     compass (1.0.3)
       chunky_png (~> 1.2)
       compass-core (~> 1.0.2)
@@ -503,8 +501,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry-byebug (3.1.0)
-      byebug (~> 4.0)
+    pry-byebug (3.3.0)
+      byebug (~> 8.0)
       pry (~> 0.10)
     pry-debundle (0.8)
       pry