Add more ruby interpreters to CI

It makes sense to test and jruby and alternatives. hiera lookups via
puppetserver are executed via jruby.

Author: bastelfreak

.github/workflows/test.yml

@@ -20,6 +20,10 @@ jobs:
           - "3.0"
           - "3.1"
           - "3.2"
+          - truffleruby
+          - truffleruby+graalvm
+          - jruby
+          - jruby-9.4
         puppet:
           - "~> 8.0"
           - "~> 7.24"
@@ -34,8 +38,6 @@ jobs:
             puppet: "https://github.com/puppetlabs/puppet.git#main"
           - ruby: "2.7"
             puppet: "https://github.com/puppetlabs/puppet.git#main"
-          - ruby: "2.6"
-            puppet: "https://github.com/puppetlabs/puppet.git#main"
     env:
       PUPPET_VERSION: ${{ matrix.puppet }}
       COVERAGE: ${{ matrix.coverage }}