chore: release doesn't push to testpypi

Author: d-v-b

.github/workflows/cd.yml

@@ -42,7 +42,7 @@ jobs:
       attestations: write
       contents: read
     runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/v')
+    if: startsWith(github.ref, 'refs/tags/v') && github.event_name != 'release'
 
     steps:
       - uses: actions/download-artifact@v8