Add test environment

Author: blueskyson

.github/workflows/main.yml

@@ -4,10 +4,7 @@ on: [push, pull_request]
 
 jobs:
   fibdrv-check:
-    strategy:
-      matrix:
-        os: [ubuntu-22.04, ubuntu-24.04]
-    runs-on: ${{ matrix.os }}
+    runs-on: [ubuntu-22.04, ubuntu-24.04]
     steps:
     - uses: actions/checkout@v3.3.0
     - name: install-dependencies
@@ -23,7 +20,7 @@ jobs:
             make check
 
   coding-style:
-    runs-on: ${{ matrix.os }}
+    runs-on: [ubuntu-22.04, ubuntu-24.04]
     steps:
     - uses: actions/checkout@v3.3.0
     - name: coding convention