Merge pull request #43 from thewangcj/dependabot/bundler/rack-2.2.8.1

Bump rack from 1.6.13 to 2.2.8.1

Gemfile.lock

@@ -3,7 +3,7 @@ GEM
   specs:
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    backports (3.23.0)
+    base64 (0.2.0)
     coderay (1.1.3)
     colorator (1.1.0)
     concurrent-ruby (1.1.9)
@@ -33,10 +33,10 @@ GEM
       rouge (~> 3.0)
       safe_yaml (~> 1.0)
       terminal-table (~> 2.0)
-    jekyll-admin (0.11.0)
+    jekyll-admin (0.11.1)
       jekyll (>= 3.7, < 5.0)
-      sinatra (~> 1.4)
-      sinatra-contrib (~> 1.4)
+      sinatra (>= 1.4)
+      sinatra-contrib (>= 1.4)
     jekyll-feed (0.16.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-paginate (1.1.0)
@@ -61,36 +61,38 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     multi_json (1.15.0)
+    mustermann (3.0.3)
+      ruby2_keywords (~> 0.0.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
-    rack (1.6.13)
-    rack-protection (1.5.5)
-      rack
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
+    rack (2.2.8.1)
+    rack-protection (3.2.0)
+      base64 (>= 0.1.0)
+      rack (~> 2.2, >= 2.2.4)
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.3.6)
       strscan
     rouge (3.28.0)
+    ruby2_keywords (0.0.5)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
-    sinatra (1.4.8)
-      rack (~> 1.5)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
-    sinatra-contrib (1.4.7)
-      backports (>= 2.0)
-      multi_json
-      rack-protection
-      rack-test
-      sinatra (~> 1.4.0)
-      tilt (>= 1.3, < 3)
+    sinatra (3.2.0)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.2.0)
+      tilt (~> 2.0)
+    sinatra-contrib (3.2.0)
+      multi_json (>= 0.0.2)
+      mustermann (~> 3.0)
+      rack-protection (= 3.2.0)
+      sinatra (= 3.2.0)
+      tilt (~> 2.0)
     strscan (3.1.0)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)