🤖 Drop Ruby 2.3 Caboose testing

Author: pboling

.github/workflows/caboose.yml

@@ -180,63 +180,3 @@ appraise "templating" do
   eval_gemfile "modular/templating.gemfile"
   eval_gemfile "modular/x_std_libs.gemfile"
 end
-
-appraise "ruby-2-3-hashie_v0" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v0.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end
-
-appraise "ruby-2-3-hashie_v1" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v1.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end
-
-appraise "ruby-2-3-hashie_v2" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v2.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end
-
-appraise "ruby-2-3-hashie_v3" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v3.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end
-
-appraise "ruby-2-3-hashie_v4" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v4.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end
-
-appraise "ruby-2-3-hashie_v5" do
-  eval_gemfile "modular/faraday_v0.gemfile"
-  eval_gemfile "modular/hashie_v5.gemfile"
-  eval_gemfile "modular/jwt_v1.gemfile"
-  eval_gemfile "modular/logger_v1_2.gemfile"
-  eval_gemfile "modular/multi_xml_v0_5.gemfile"
-  eval_gemfile "modular/rack_v1_2.gemfile"
-  eval_gemfile "modular/x_std_libs/r2.3/libs.gemfile"
-end

Appraisals

@@ -33,13 +33,14 @@ Please file a bug if you notice a violation of semantic versioning.
 
 ### Removed
 
+- Dropped the obsolete Ruby 2.3 Caboose workflow and its Hashie appraisal
+  gemfiles; development tooling now requires Ruby 2.4 or newer, and Ruby 2.4
+  coverage is already handled by the standard Ruby 2.4 workflow.
+
 ### Fixed
 
-- Updated CI workflow maintenance: QLTY uploads now use OIDC, harden-runner is pinned to v2.19.4, and Caboose dependency installation logs are visible on failure.
-- Restored Ruby 2.3 Caboose CI bundle resolution by using the last compatible kettle development/test toolchain on that EOL runtime.
-- Kept Ruby 2.3 Caboose CI on the last compatible `gitmoji-regex` release.
-- Added the missing Ruby 2.3 modular stdlib gemfiles required by generated Caboose appraisals.
-- Ran Ruby 2.3 Caboose specs directly with `rspec` because the compatible `kettle-test` 1.x toolchain does not expose the newer executable.
+- Updated CI workflow maintenance: QLTY uploads now use OIDC and harden-runner
+  is pinned to v2.19.4.
 - Replaced stale platform CI `rake magic` commands with portable spec commands.
 - Pinned `multi_xml` below 0.9 for TruffleRuby compatibility.
 - Marked EOL TruffleRuby 22.3, 23.0, and 23.1 CI as experimental because they can crash inside the interpreter during Bundler setup.