fix: specify runners via matrix strategy

Signed-off-by: K.B.Dharun Krishna <[email protected]>

Author: kbdharun

.github/workflows/test.yml

@@ -4,10 +4,11 @@ on: ['push', 'pull_request']
 
 jobs:
   build:
-    runs-on: ['ubuntu-latest', 'ubuntu-24.04-arm']
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
+        os: ['ubuntu-latest', 'ubuntu-24.04-arm']
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', 'pypy3.9', 'pypy3.10']
 
     steps: