Add missing condition in CI (#264)

Author: araffin

.github/workflows/ci.yml

@@ -53,7 +53,7 @@ jobs:
           uv pip install --system gymnasium==${{ matrix.gymnasium-version }}
           uv pip install --system "numpy<2"
         # Only run for python 3.10, downgrade gym to 0.29.1
-
+        if: matrix.gymnasium-version != '1.0.0'
       - name: Lint with ruff
         run: |
           make lint