Re-add truffleruby in CI (#1636)

* This reverts commit 776d043.
* See #1586

> No one fix failure jobs over one month.

The CI failure was reported in
truffleruby/truffleruby#4094 and I did a lot
of work to replace Ripper with `Prism::Translation::Ripper` in
TruffleRuby and [improved `Prism::Translation::Ripper` to be compatible
enough](ruby/prism#3838).
There were only 6 days between report & fix.

It seems there was another failure after that, I found [this failing
run](https://github.com/ruby/rdoc/actions/runs/21367549712/job/61503325741)
```
/home/runner/work/rdoc/rdoc/lib/rdoc/parser/ripper_state_lex.rb:17:in 'Module#const_missing': uninitialized constant Prism::Translation::Ripper::Filter (NameError)
```

This has been fixed since then (`ruby -rripper -e 'p
Prism::Translation::Ripper::Filter'` works on truffleruby-head), given
the CI now passes.

Author: eregon

.github/workflows/test.yml

@@ -16,7 +16,6 @@ jobs:
     with:
       # 2.7 breaks `test_parse_statements_nodoc_identifier_alias_method`
       min_version: 3.0
-      engine: cruby-jruby
       versions: '["mswin"]'
 
   test:
@@ -27,6 +26,10 @@ jobs:
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         os: [ubuntu-latest, macos-latest, windows-latest]
         exclude:
+          - os: windows-latest
+            ruby: truffleruby
+          - os: windows-latest
+            ruby: truffleruby-head
           - os: windows-latest
             ruby: jruby
           - os: windows-latest