Bump activesupport from 6.0.0 to 6.0.3.1 in /docs

Bumps [activesupport](https://github.com/rails/rails) from 6.0.0 to 6.0.3.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3.1/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v6.0.0...v6.0.3.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/Gemfile.lock

@@ -1,16 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.0)
+    activesupport (6.0.3.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-      zeitwerk (~> 2.1, >= 2.1.8)
+      zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -24,7 +24,7 @@ GEM
       activesupport (>= 2)
       nokogiri (>= 1.4)
     http_parser.rb (0.6.0)
-    i18n (1.6.0)
+    i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     jekyll (4.0.0)
       addressable (~> 2.4)
@@ -73,7 +73,7 @@ GEM
       jekyll-include-cache (~> 0.1)
       jekyll-paginate (~> 1.1)
       jekyll-sitemap (~> 1.3)
-    minitest (5.11.3)
+    minitest (5.14.1)
     multipart-post (2.1.1)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
@@ -94,10 +94,10 @@ GEM
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.6.0)
-    zeitwerk (2.1.9)
+    zeitwerk (2.3.0)
 
 PLATFORMS
   ruby