feat: 更新 ostool 安装方式，使用 cargo +stable 安装指定版本

Author: ZR233

.github/workflows/test-board.yml

@@ -34,7 +34,8 @@ jobs:
       - uses: cargo-bins/cargo-binstall@main
 
       - name: Install ostool
-        run: cargo binstall ostool
+        # run: cargo binstall ostool
+        run: cargo +stable install ostool --version ^0.8
 
       - name: Run tests
         run: |

.github/workflows/test-qemu.yml

@@ -38,7 +38,8 @@ jobs:
       - uses: cargo-bins/cargo-binstall@main
 
       - name: Install ostool
-        run: cargo binstall ostool
+        # run: cargo binstall ostool
+        run: cargo +stable install ostool --version ^0.8
 
       - name: Download images and patch vm configs
         run: |