ci: test with more newer ruby

Signed-off-by: Kentaro Hayashi <[email protected]>

Author: kenhys

.github/workflows/linux.yml

@@ -9,10 +9,12 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 2.5
-          - 2.6
           - 2.7
           - 3.0
+          - 3.1
+          - 3.2
+          - 3.3
+          - 3.4
         os:
           - ubuntu-latest
     name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }}

.github/workflows/windows.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.5', '2.6', '2.7', '3.0' ]
+        ruby: [ '2.7', '3.0', '3.1', '3.2', '3.3', '3.4' ]
         os:
           - windows-latest
     name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }}