Update macos runner for amd64

Author: ericdallo

.github/workflows/nightly.yml

@@ -232,7 +232,7 @@ jobs:
   macos-amd64:
     needs: [build-jar, release-dev-build]
     continue-on-error: true
-    runs-on: macos-14
+    runs-on: macos-15-intel
     strategy:
       fail-fast: false
     steps:

.github/workflows/release.yml

@@ -198,7 +198,7 @@ jobs:
   macos-amd64:
     name: Build native MacOS amd64 binary
     needs: [ build-jar]
-    runs-on: macos-14
+    runs-on: macos-15-intel
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4