bump sidekiq

Gemfile

@@ -32,7 +32,7 @@ gem "simple_captcha2", "0.3.4", require: "simple_captcha"
 
 # Background processing
 
-gem "sidekiq", "3.4.1"
+gem "sidekiq", "3.4.2"
 gem "sinatra", "1.4.6"
 
 # Scheduled processing

Gemfile.lock

@@ -652,12 +652,12 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (2.8.0)
       activesupport (>= 3.0.0)
-    sidekiq (3.4.1)
+    sidekiq (3.4.2)
       celluloid (~> 0.16.0)
-      connection_pool (>= 2.1.1)
-      json
-      redis (>= 3.0.6)
-      redis-namespace (>= 1.3.1)
+      connection_pool (~> 2.2, >= 2.2.0)
+      json (~> 1.0)
+      redis (~> 3.2, >= 3.2.1)
+      redis-namespace (~> 1.5, >= 1.5.2)
     sidetiq (0.6.3)
       celluloid (>= 0.14.1)
       ice_cube (= 0.11.1)
@@ -854,7 +854,7 @@ DEPENDENCIES
   sass-rails (= 5.0.1)
   selenium-webdriver (= 2.45.0)
   shoulda-matchers (= 2.8.0)
-  sidekiq (= 3.4.1)
+  sidekiq (= 3.4.2)
   sidetiq (= 0.6.3)
   simple_captcha2 (= 0.3.4)
   simplecov (= 0.10.0)