set fetch-depth: 0 to get tags

Author: kleinhenz

.github/workflows/testpypi.yml

@@ -20,6 +20,8 @@ jobs:
 
     steps:
       - uses: "actions/checkout@v4"
+        with:
+          fetch-depth: 0
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5