jekyll: Update the dependencies (security, CVE-2020-8165)

This fixes a potential security issue (reported by bundler-audit) by
updating activesupport to 6.0.3.1 for CVE-2020-8165 [0].

[0]: https://groups.google.com/forum/#!topic/rubyonrails-security/bv6fW4S0Y1c

pkgs/applications/misc/jekyll/basic/Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.3)
+    activesupport (6.0.3.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -66,7 +66,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     mini_portile2 (2.4.0)
-    minitest (5.14.0)
+    minitest (5.14.1)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
@@ -76,7 +76,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.18.0)
+    rouge (3.19.0)
     safe_yaml (1.0.5)
     sassc (2.3.0)
       ffi (~> 1.9)