Mark EOL TruffleRuby lanes experimental

Author: pboling

.github/workflows/truffleruby-22.3.yml

@@ -43,6 +43,7 @@ jobs:
             exec_cmd: "kettle-test"
             rubygems: default
             bundler: default
+            experimental: true
 
     steps:
       - name: Checkout

.github/workflows/truffleruby-23.1.yml

@@ -43,6 +43,7 @@ jobs:
             exec_cmd: "kettle-test"
             rubygems: default
             bundler: default
+            experimental: true
 
     steps:
       - name: Checkout

CHANGELOG.md

@@ -30,7 +30,7 @@ Please file a bug if you notice a violation of semantic versioning.
 
 - Replaced stale platform CI `rake magic` commands with portable spec commands.
 - Pinned `multi_xml` below 0.9 for TruffleRuby compatibility.
-- Marked TruffleRuby 23.0 CI as experimental because it can crash inside the interpreter during Bundler setup.
+- Marked EOL TruffleRuby 22.3, 23.0, and 23.1 CI as experimental because they can crash inside the interpreter during Bundler setup.
 
 ### Security