chore(deps): upgrade nokogiri to 1.11.7

Gemfile.lock

@@ -134,7 +134,7 @@ GEM
     marcel (1.0.0)
     method_source (1.0.0)
     mini_mime (1.0.3)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.5.3)
     minitest (5.14.4)
     mongo (2.6.2)
       bson (>= 4.3.0, < 5.0.0)
@@ -149,7 +149,7 @@ GEM
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
     nio4r (2.5.7)
-    nokogiri (1.11.2)
+    nokogiri (1.11.7)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     puma (4.3.8)