Add a truffle-ruby build

Signed-off-by: James Couball <jcouball@yahoo.com>

Author: jcouball

.github/workflows/main.yml

@@ -14,13 +14,11 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ['2.7', '3.0', '3.1', '3.2', 'head']
+        ruby: ['2.7', '3.0', '3.1', '3.2', 'head', 'jruby-head', 'truffleruby-head']
         operating-system: [ubuntu-latest]
         include:
           - ruby: 3.1
             operating-system: windows-latest
-          - ruby: jruby-head
-            operating-system: ubuntu-latest
           # - ruby: jruby-head
           #   operating-system: windows-latest
 

.tool-versions

@@ -0,0 +1 @@
+ruby 3.0.5

spec/process_executer_spec.rb

@@ -5,7 +5,7 @@
     subject { ProcessExecuter.spawn(*command, **options) }
 
     context 'for a command that does not time out' do
-      let(:command) { ['exit 1'] }
+      let(:command) { %w[false] }
       let(:options) { {} }
       it { is_expected.to be_a(Process::Status) }
       it { is_expected.to have_attributes(exitstatus: 1) }