removed version specifier in setup nushell

.github/workflows/docker.yml

@@ -16,8 +16,7 @@ jobs:
         steps:
             - uses: actions/checkout@v4
             - uses: hustcer/setup-nu@v3
-              with:
-                  version: "0.90" # Don't use 0.90 here, as it would be a float number and would be converted to 0.9, you can use v0.90/0.90.0 or '0.90'
+
             - name: Build Docker image
               run: |
                   apt install -y nu