Merge pull request #623 from mhashizume/maint/main/ruby_25_update

(maint) Standardizes Rubies in GitHub Actions

Author: mhashizume

.github/workflows/task_acceptance_tests.yaml

@@ -15,7 +15,7 @@ jobs:
         os: [ 'centos-7', 'ubuntu-18.04', 'rocky-8' ]
 
     env:
-      ruby_version: 2.5.9
+      ruby_version: 2.5
       GEM_BOLT: true
       BEAKER_debug: true
       BEAKER_set: docker/${{ matrix.os }}

.github/workflows/unit_tests_with_nightly_puppet_gem.yaml

@@ -16,7 +16,7 @@ jobs:
         puppet_version: [ 6, 7 ]
         include:
           - puppet_version: 6
-            ruby: 2.5.8
+            ruby: 2.5
           - puppet_version: 7
             ruby: 2.7
 

.github/workflows/unit_tests_with_released_puppet_gem.yaml

@@ -16,7 +16,7 @@ jobs:
         puppet_version: [ 6, 7 ]
         include:
           - puppet_version: 6
-            ruby: 2.5.8
+            ruby: 2.5
           - puppet_version: 7
             ruby: 2.7