Use native x86_64 macOS runners for x86_64 builds

Rather than running in Rosetta 2. This should make testing on CI faster.

Author: bjorn3

.github/workflows/main.yml

@@ -56,7 +56,7 @@ jobs:
           - os: ubuntu-24.04-arm
             env:
               TARGET_TRIPLE: aarch64-unknown-linux-gnu
-          - os: macos-latest
+          - os: macos-13
             env:
               TARGET_TRIPLE: x86_64-apple-darwin
           - os: macos-latest
@@ -94,10 +94,6 @@ jobs:
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
       run: rustup set default-host x86_64-pc-windows-gnu
 
-    - name: Use x86_64 compiler on macOS
-      if: matrix.os == 'macos-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-apple-darwin'
-      run: rustup set default-host x86_64-apple-darwin
-
     - name: Install toolchain and emulator
       if: matrix.apt_deps != null
       run: |
@@ -194,7 +190,7 @@ jobs:
           - os: ubuntu-24.04-arm
             env:
               TARGET_TRIPLE: aarch64-unknown-linux-gnu
-          - os: macos-latest
+          - os: macos-13
             env:
               TARGET_TRIPLE: x86_64-apple-darwin
           - os: macos-latest
@@ -220,10 +216,6 @@ jobs:
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
       run: rustup set default-host x86_64-pc-windows-gnu
 
-    - name: Use x86_64 compiler on macOS
-      if: matrix.os == 'macos-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-apple-darwin'
-      run: rustup set default-host x86_64-apple-darwin
-
     - name: Prepare dependencies
       run: ./y.sh prepare