Bump nokogiri from 1.8.1 to 1.13.4 in /grnd/COSMOS/Demo

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.8.1 to 1.13.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.13.4/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.8.1...v1.13.4)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: indirect
...

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

grnd/COSMOS/Demo/Gemfile.lock

@@ -22,9 +22,13 @@ GEM
     httpclient (2.8.3)
     json (1.8.6)
     method_source (0.8.2)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.1-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.8.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.4-x64-mingw32)
+      racc (~> 1.4)
+    opengl (0.9.2)
     opengl (0.9.2-x64-mingw32)
     pry (0.10.4)
       coderay (~> 1.1.0)
@@ -34,23 +38,28 @@ GEM
       pry (~> 0.9)
       yard (~> 0.8)
     puma (3.10.0)
+    qtbindings (4.8.6.4)
     qtbindings (4.8.6.4-x64-mingw32)
       qtbindings-qt (~> 4.8.6.0, >= 4.8.6.4)
     qtbindings-qt (4.8.6.4-x64-mingw32)
+    racc (1.6.0)
     rack (2.0.3)
     rake (12.3.0)
     rdoc (4.3.0)
+    ruby-termios (0.9.6)
     rubyzip (1.2.1)
     slop (3.6.0)
     snmp (1.2.0)
     uuidtools (2.1.5)
     yard (0.9.11)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES
   cosmos
+  ruby-termios (~> 0.9)
 
 BUNDLED WITH
    1.16.0