[doc] Update gems

docs/Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.2.1)
+    activesupport (6.0.2.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -26,7 +26,7 @@ GEM
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
-    faraday (1.0.0)
+    faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
     ffi (1.12.2)
     forwardable-extended (2.6.0)
@@ -204,9 +204,9 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.0)
     multipart-post (2.1.1)
-    nokogiri (1.10.8)
+    nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
-    octokit (4.16.0)
+    octokit (4.18.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)
@@ -216,9 +216,9 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rouge (3.13.0)
-    ruby-enum (0.7.2)
+    ruby-enum (0.8.0)
       i18n
-    rubyzip (2.2.0)
+    rubyzip (2.3.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -233,10 +233,10 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
-    tzinfo (1.2.6)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
-    unicode-display_width (1.6.1)
-    zeitwerk (2.2.2)
+    unicode-display_width (1.7.0)
+    zeitwerk (2.3.0)
 
 PLATFORMS
   ruby