💚 Modernize MacOS and Windows workflows

- make them evergreen

Author: pboling

.github/workflows/macos.yml

@@ -4,8 +4,6 @@ on:
   push:
     branches:
       - 'main'
-      - '*-maintenance'
-      - '*-dev'
       - '*-stable'
     tags:
       - '!*' # Do not execute on tags
@@ -38,9 +36,7 @@ jobs:
         bundler:
           - latest
         ruby:
-          - "2.7"
-          - "3.0"
-          - "3.1"
+          - ruby
           - truffleruby
 
     runs-on: macos-latest

.github/workflows/windows.yml

@@ -4,8 +4,6 @@ on:
   push:
     branches:
       - 'main'
-      - '*-maintenance'
-      - '*-dev'
       - '*-stable'
     tags:
       - '!*' # Do not execute on tags
@@ -38,9 +36,7 @@ jobs:
         bundler:
           - latest
         ruby:
-          - "2.7"
-          - "3.0"
-          - "3.1"
+          - ruby
 
     runs-on: windows-latest
     continue-on-error: ${{ matrix.experimental || endsWith(matrix.ruby, 'head') }}