Use a consistent ordering for JRuby and TruffleRuby

Author: eregon

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
       matrix:
         os: [ ubuntu-16.04, ubuntu-18.04, macos-latest ]
         # Use various version syntaxes here for testing
-        ruby: [ 2.3, ruby-2.4, 2.5, ruby-2.6.5, 2.7.0, truffleruby, jruby ]
+        ruby: [ 2.3, ruby-2.4, 2.5, ruby-2.6.5, 2.7.0, jruby, truffleruby ]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2

README.md

@@ -57,7 +57,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest ]
-        ruby: [ ruby-2.6, ruby-2.7, truffleruby-19.3.0, jruby-9.2.9.0 ]
+        ruby: [ ruby-2.6, ruby-2.7, jruby-9.2.9.0, truffleruby-19.3.0 ]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
@@ -87,7 +87,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest ]
-        ruby: [ 2.4, 2.5, 2.6, 2.7, truffleruby, jruby ]
+        ruby: [ 2.4, 2.5, 2.6, 2.7, jruby, truffleruby ]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2