Use Xcode 13 on macOS for Rust 1.48.0

To workaround rust-lang/rust#103044

Author: messense

.github/workflows/main.yml

@@ -25,6 +25,10 @@ jobs:
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.toolchain }}
+      - uses: maxim-lobanov/setup-xcode@v1
+        if: ${{ matrix.os == 'macos-latest' && matrix.toolchain == '1.48.0' }}
+        with:
+          xcode-version: 13
       - name: Cargo build
         run: cargo build