Update github action images

Author: JayXon

.github/workflows/ci.yml

@@ -9,10 +9,10 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
           - ubuntu-22.04
-          - macos-11
-          - macos-12
+          - ubuntu-24.04
+          - macos-13
+          - macos-15
         compiler:
           - { cc: gcc, cxx: g++ }
           - { cc: clang, cxx: clang++ }