Update cpp-ci because github will stop supporting macos-13

Author: aous72

.github/workflows/ccp-workflow.yml

@@ -33,7 +33,7 @@ jobs:
       fail-fast: false
       matrix:
         include: [
-          { system: MacOS,          runner: macos-latest },
+          { system: MacOS Dual Build, runner: macos-latest },
         ]
     name: ${{ matrix.system }} Build
     runs-on: ${{ matrix.runner }}
@@ -113,7 +113,7 @@ jobs:
       fail-fast: false
       matrix:
         include: [
-          { system: MacOS-13,       runner: macos-13 },
+          { system: MacOS-Intel,    runner: macos-15-intel },
           { system: MacOS-latest,   runner: macos-latest },
           { system: Ubuntu-latest,  runner: ubuntu-latest },
         ]