.github/workflows/ruby.yml in snmp-open-0.7.0 vs .github/workflows/ruby.yml in snmp-open-0.7.1

@@ -10,10 +10,10 @@
   test:
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        ruby: [2.4, 2.5, 2.6, 2.7, jruby, truffleruby]
+        ruby: [2.4, 2.5, 2.6, 2.7, jruby]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
       with: