actions: fix macOS build because old Haxe doesn't support arm64

Author: joshtynjala

.github/workflows/main.yml

@@ -187,7 +187,8 @@ jobs:
         # HashLink is not supported by Haxe 3
         haxe-version: [4.0.5, 4.1.5, 4.2.5, 4.3.2]
     # AL init fails on both windows and ubuntu
-    runs-on: macos-latest
+    # macos-14 is arm64, which setup-haxe doesn't support yet
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v3