ARM-CI checkout loader release

.github/workflows/aarch64.yml

@@ -37,6 +37,22 @@ jobs:
         uses: actions/checkout@v3
         with:
           path: libhermit-rs
+      - name: Checkout loader
+        uses: actions/checkout@v3
+        with:
+          repository: hermitcore/rusty-loader
+          path: loader
+      - name: Checkout loader release
+        run: |
+          # Get new tags from remote
+          git fetch --tags
+
+          # Get latest tag name
+          latestTag=$(git describe --tags `git rev-list --tags --max-count=1`)
+
+          # Checkout latest tag
+          git checkout $latestTag
+        working-directory: loader
       - name: Rustup (apply rust-toolchain.toml)
         working-directory: libhermit-rs
         run: rustup show