Fix package version target (#514)

Author: fcollonval

.github/actions/finalize-release/action.yml

@@ -38,7 +38,7 @@ runs:
         # Install Jupyter Releaser from git unless we are testing Releaser itself
         if ! command -v jupyter-releaser &> /dev/null
         then
-            pip install -q git+https://github.com/jupyter-server/jupyter_releaser.git@v1
+            pip install -q git+https://github.com/jupyter-server/jupyter_releaser.git@v2
         fi
 
     - id: finalize-release