[Mac OS] Update runners to OS 15

.github/workflows/rpcs3.yml

@@ -123,15 +123,15 @@ jobs:
       matrix:
         include:
           - name: Intel
-            AARCH64: 0
+            runs-on: macos-15-intel
             UPLOAD_COMMIT_HASH: 51ae32f468089a8169aaf1567de355ff4a3e0842
             UPLOAD_REPO_FULL_NAME: rpcs3/rpcs3-binaries-mac
           - name: Apple Silicon
-            AARCH64: 1
+            runs-on: macos-15
             UPLOAD_COMMIT_HASH: 8e21bdbc40711a3fccd18fbf17b742348b0f4281
             UPLOAD_REPO_FULL_NAME: rpcs3/rpcs3-binaries-mac-arm64
     name: RPCS3 Mac ${{ matrix.name }} 
-    runs-on: macos-14
+    runs-on: ${{ matrix.runs-on }} 
     env:
       CCACHE_DIR: /tmp/ccache_dir
       QT_VER: '6.11.1'
@@ -140,8 +140,7 @@ jobs:
       RELEASE_MESSAGE: ../GitHubReleaseMessage.txt
       UPLOAD_COMMIT_HASH: ${{ matrix.UPLOAD_COMMIT_HASH }}
       UPLOAD_REPO_FULL_NAME: ${{ matrix.UPLOAD_REPO_FULL_NAME }}
-      AARCH64: ${{ matrix.AARCH64 }}
-      RUN_UNIT_TESTS: github.event_name == 'pull_request' && 'ON' || 'OFF'
+      RUN_UNIT_TESTS: ${{ matrix.name == 'Apple Silicon' && (github.event_name == 'pull_request' && 'ON') || 'OFF' }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@main