Bump slim-rails to 3.1.2

Bumps [slim-rails](https://github.com/slim-template/slim-rails) from 3.1.0 to 3.1.2.
- [Commits](slim-template/slim-rails@v3.1.0...v3.1.2)

Gemfile.lock

@@ -49,7 +49,7 @@ GEM
       debug_inspector (>= 0.0.1)
     bootstrap-on-rails (3.3.1)
       less-rails
-    builder (3.2.2)
+    builder (3.2.3)
     capybara (2.7.1)
       addressable
       mime-types (>= 1.16)
@@ -125,12 +125,12 @@ GEM
     hashdiff (0.3.0)
     htmlentities (4.3.4)
     hub (1.12.4)
-    i18n (0.7.0)
+    i18n (0.8.1)
     jquery-rails (4.1.1)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.3)
+    json (1.8.6)
     kaminari (0.17.0)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -154,18 +154,16 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.10.2)
     multi_json (1.12.1)
     multi_test (0.1.2)
     newrelic_rpm (3.16.0.318)
-    nokogiri (1.6.8)
+    nokogiri (1.7.2)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     open_uri_redirections (0.2.1)
     parser (2.3.1.2)
       ast (~> 2.2)
     pg (0.18.4)
-    pkg-config (1.1.7)
     pluralize_no_count_if_one (0.0.1)
       railties
     poltergeist (1.10.0)
@@ -176,7 +174,7 @@ GEM
     puma (3.6.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.8)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)
@@ -194,9 +192,9 @@ GEM
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
+    rails-dom-testing (1.0.8)
       activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
@@ -215,7 +213,7 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.1.0)
-    rake (11.2.2)
+    rake (12.0.0)
     redcarpet (3.3.4)
     redis (3.3.1)
     ref (2.0.0)
@@ -279,10 +277,10 @@ GEM
       rack (~> 1.5)
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
-    slim (3.0.7)
-      temple (~> 0.7.6)
+    slim (3.0.8)
+      temple (>= 0.7.6, < 0.9)
       tilt (>= 1.3.3, < 2.1)
-    slim-rails (3.1.0)
+    slim-rails (3.1.2)
       actionpack (>= 3.1)
       railties (>= 3.1)
       slim (~> 3.0)
@@ -293,21 +291,21 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    temple (0.7.7)
+    temple (0.8.0)
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     therubyracer (0.12.2)
       libv8 (~> 3.16.14.0)
       ref
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tilt (2.0.5)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    tilt (2.0.7)
     timecop (0.8.1)
     tins (1.12.0)
     turbolinks (5.0.1)
       turbolinks-source (~> 5)
     turbolinks-source (5.0.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     uglifier (3.0.1)
       execjs (>= 0.3.0, < 3)