Fix enviorment setup for cache_xmss_and_xmssmt_keys.yml.

Signed-off-by: Guiliano99 <[email protected]>

Author: Guiliano99

.github/workflows/cache_xmss_and_xmssmt_keys.yml

@@ -53,14 +53,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-
-      # Set up Python 3.9 environment, but could be changed as needed.
-      - uses: actions/setup-python@v5
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
         with:
-          python-version: "3.9"
+          version: "latest"
+          enable-cache: true
+          cache-dependency-glob: "**/pyproject.toml"
 
-      - name: Install dependencies
-        run: pip install .[dev]
+      - name: Set up Python 3.9
+        run: uv python install 3.9
 
       # Generate today's date for use in progress cache keys
       # This ensures we get a new cache entry each day for incremental progress