use the action from @hustcer in the GitHub CI (!186)

see the successful CI on GitHub: https://github.com/dragoon-rs/komodo/actions/runs/11950087413/job/33310881686

.github/workflows/ci.yml

@@ -22,9 +22,6 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
-    env:
-      NUSHELL_ARCH: 'x86_64-unknown-linux-musl'
-      NUSHELL_VERSION: '0.95.0'
     needs: fmt
     if: "!contains(github.event.head_commit.message, 'draft:') && !contains(github.event.head_commit.message, 'no-ci:')"
     steps:
@@ -34,12 +31,9 @@ jobs:
           sudo apt update --yes
           sudo apt upgrade --yes
           sudo apt install protobuf-compiler --yes
-      - name: Install Nushell
-        run: |
-          curl -fLo /tmp/nu.tar.gz "https://github.com/nushell/nushell/releases/download/$NUSHELL_VERSION/nu-$NUSHELL_VERSION-$NUSHELL_ARCH.tar.gz"
-          tar xvf /tmp/nu.tar.gz --directory /tmp
-          cp "/tmp/nu-$NUSHELL_VERSION-$NUSHELL_ARCH/nu" /tmp/nu
-          echo "PATH=/tmp/:$PATH" >> $GITHUB_ENV
+      - uses: hustcer/setup-nu@v3
+        with:
+          version: "0.95"
       - name: Show configuration
         run: make show
       - name: Run tests