Update to Rack 2 (via lanyon 0.3.4)

Author: stomar

Gemfile.lock

@@ -18,9 +18,9 @@ GEM
       listen (~> 3.0, < 3.1)
     kgio (2.10.0)
     kramdown (1.11.1)
-    lanyon (0.3.3)
+    lanyon (0.3.4)
       jekyll (>= 2.0, < 4.0)
-      rack (~> 1.6)
+      rack (>= 1.6, < 3.0)
     liquid (3.0.6)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -33,7 +33,7 @@ GEM
       pkg-config (~> 1.1.7)
     paint (0.9.0)
     pkg-config (1.1.7)
-    rack (1.6.4)
+    rack (2.0.1)
     rack-protection (1.5.3)
       rack
     rack-rewrite (1.5.1)