update ruby version for rails-install-ubuntu

Author: emorima

rails-install-ubuntu.sh

@@ -27,8 +27,8 @@ curl -sSL https://get.rvm.io | bash -s stable
 source ~/.rvm/scripts/rvm
 
 echo "Installs Ruby"
-rvm install 2.5.1
-rvm use 2.5.1 --default
+rvm install 2.5.3
+rvm use 2.5.3 --default
 
 echo "gem: --no-ri --no-rdoc" > ~/.gemrc
 gem install bundler
@@ -42,7 +42,7 @@ echo -n "Should be sqlite 3.8.1 or higher: sqlite "
 sqlite3 --version
 echo -n "Should be rvm 1.26.11 or higher:         "
 rvm --version | sed '/^.*$/N;s/\n//g' | cut -c 1-11
-echo -n "Should be ruby 2.5.1:                "
+echo -n "Should be ruby 2.5.3:                "
 ruby -v | cut -d " " -f 2
 echo -n "Should be Rails 4.2.1 or higher:         "
 rails -v