Update buildpack-packager to 2.3.10

cf.Gemfile

@@ -5,7 +5,7 @@ ruby '~> 2.3'
 gem 'rspec'
 gem 'rspec-instafail'
 gem 'machete', git: 'https://github.com/cloudfoundry/machete', tag: 'v0.0.69'
-gem 'buildpack-packager', git: 'https://github.com/cloudfoundry/buildpack-packager', tag: 'v2.3.9'
+gem 'buildpack-packager', git: 'https://github.com/cloudfoundry/buildpack-packager', tag: 'v2.3.10'
 gem 'excon'
 gem 'rspec-eventually'
 

cf.Gemfile.lock

@@ -1,9 +1,9 @@
 GIT
   remote: https://github.com/cloudfoundry/buildpack-packager
-  revision: 12fafa8a695dfb6003bc3297063ce85c1494f77b
-  tag: v2.3.9
+  revision: fcfd9704ee708410156161f7f0493b787a3e1f61
+  tag: v2.3.10
   specs:
-    buildpack-packager (2.3.9)
+    buildpack-packager (2.3.10)
       activesupport (~> 4.1)
       kwalify (~> 0)
       semantic
@@ -21,7 +21,7 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.8)
+    activesupport (4.2.9)
       i18n (~> 0.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
@@ -33,9 +33,9 @@ GEM
     ffi (1.9.18)
     httparty (0.15.5)
       multi_xml (>= 0.5.2)
-    i18n (0.8.4)
+    i18n (0.8.6)
     kwalify (0.7.2)
-    minitest (5.10.2)
+    minitest (5.10.3)
     multi_xml (0.6.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
@@ -59,7 +59,7 @@ GEM
     thread_safe (0.3.6)
     tzinfo (1.2.3)
       thread_safe (~> 0.1)
-    unicode-display_width (1.2.1)
+    unicode-display_width (1.3.0)
 
 PLATFORMS
   ruby