Merge pull request #6 from slack-ruby/dependabot/bundler/nokogiri-1.12.5

Bump nokogiri from 1.10.9 to 1.12.5

Author: dblock

Gemfile.lock

@@ -104,7 +104,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2020.0425)
     mini_mime (1.0.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.6.1)
     minitest (5.14.0)
     mongo (2.12.1)
       bson (>= 4.8.2, < 5.0.0)
@@ -130,9 +130,11 @@ GEM
       slack-ruby-bot (>= 0.10.5)
     newrelic_rpm (6.10.0.364)
     nio4r (2.5.2)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     public_suffix (4.0.4)
+    racc (1.5.2)
     rack (2.2.2)
     rack-accept (0.4.5)
       rack (>= 0.4)