Bump redcarpet from 3.3.4 to 3.5.1

Bumps [redcarpet](https://github.com/vmg/redcarpet) from 3.3.4 to 3.5.1.
- [Release notes](https://github.com/vmg/redcarpet/releases)
- [Changelog](https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md)
- [Commits](vmg/redcarpet@v3.3.4...v3.5.1)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -1,76 +1,76 @@
-GEM
-  remote: https://rubygems.org/
-  specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
-    colorator (1.1.0)
-    ffi (1.11.1)
-    forwardable-extended (2.6.0)
-    jekyll (3.6.3)
-      addressable (~> 2.4)
-      colorator (~> 1.0)
-      jekyll-sass-converter (~> 1.0)
-      jekyll-watch (~> 1.1)
-      kramdown (~> 1.14)
-      liquid (~> 4.0)
-      mercenary (~> 0.3.3)
-      pathutil (~> 0.9)
-      rouge (>= 1.7, < 3)
-      safe_yaml (~> 1.0)
-    jekyll-redirect-from (0.11.0)
-      jekyll (>= 2.0)
-    jekyll-sass-converter (1.5.2)
-      sass (~> 3.4)
-    jekyll-watch (1.5.1)
-      listen (~> 3.0)
-    kramdown (1.17.0)
-    libv8 (3.16.14.15)
-    liquid (4.0.3)
-    listen (3.2.0)
-      rb-fsevent (~> 0.10, >= 0.10.3)
-      rb-inotify (~> 0.9, >= 0.9.10)
-    mercenary (0.3.6)
-    octopress (3.0.12.pre.1)
-      jekyll (>= 2.0)
-      mercenary (~> 0.3.2)
-      octopress-deploy
-      octopress-escape-code (~> 2.0)
-      octopress-hooks (~> 2.0)
-      redcarpet (~> 3.0)
-      titlecase
-    octopress-deploy (1.3.0)
-      colorator
-    octopress-escape-code (2.1.1)
-      jekyll (~> 3.0)
-    octopress-hooks (2.6.1)
-      jekyll (>= 2.0)
-    pathutil (0.16.2)
-      forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
-      ffi (~> 1.0)
-    redcarpet (3.3.4)
-    ref (2.0.0)
-    rouge (2.2.1)
-    safe_yaml (1.0.5)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-    therubyracer (0.12.2)
-      libv8 (~> 3.16.14.0)
-      ref
-    titlecase (0.1.1)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  jekyll
-  jekyll-redirect-from
-  octopress (~> 3.0.0.rc)
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    ffi (1.11.1)
+    forwardable-extended (2.6.0)
+    jekyll (3.6.3)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 1.1)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 3)
+      safe_yaml (~> 1.0)
+    jekyll-redirect-from (0.11.0)
+      jekyll (>= 2.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
+    kramdown (1.17.0)
+    libv8 (3.16.14.15)
+    liquid (4.0.3)
+    listen (3.2.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.3.6)
+    octopress (3.0.12.pre.1)
+      jekyll (>= 2.0)
+      mercenary (~> 0.3.2)
+      octopress-deploy
+      octopress-escape-code (~> 2.0)
+      octopress-hooks (~> 2.0)
+      redcarpet (~> 3.0)
+      titlecase
+    octopress-deploy (1.3.0)
+      colorator
+    octopress-escape-code (2.1.1)
+      jekyll (~> 3.0)
+    octopress-hooks (2.6.1)
+      jekyll (>= 2.0)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.1)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    redcarpet (3.5.1)
+    ref (2.0.0)
+    rouge (2.2.1)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    therubyracer (0.12.2)
+      libv8 (~> 3.16.14.0)
+      ref
+    titlecase (0.1.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll
+  jekyll-redirect-from
+  octopress (~> 3.0.0.rc)
   therubyracer
 
 BUNDLED WITH