.github/workflows: Fix SDK path in release.yml

Author: s-heppner

.github/workflows/release.yml

@@ -8,6 +8,9 @@ jobs:
   publish:
     # This job publishes the package to PyPI
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./sdk
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python 3.10