Maintenance: temporary fix for installation of ruby environment

Author: ralf401

install/source/include-rvm-install-ruby.rst

@@ -3,10 +3,10 @@
    # Add zammad user to RVM group
    $ usermod -a -G rvm zammad
 
-   # Install Ruby 3.2.3
+   # Install Ruby 3.2.8
    $ su - zammad
-   $ rvm install ruby-3.2.3
+   $ rvm install ruby-3.2.8
 
    # Install bundler, rake and rails
-   $ rvm use ruby-3.2.3
+   $ rvm use ruby-3.2.8
    $ gem install bundler rake rails