Update tests.yml

Author: johnnynunez

.github/workflows/tests.yml

@@ -99,8 +99,8 @@ jobs:
             cppstd: "-std=c++11"
 
           # MACOS
-          - os: macos-13
-            arch: x86_64
+          - os: macos-15
+            arch: arm64
             compiler: xcode
             version: "default"
             python-version: "3.13"