fix: remove deprecated package-name parameter from release-please config

Release Please v4 no longer accepts package-name parameter.
Package name is inferred from pyproject.toml.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: bokelley

.github/workflows/release-please.yml

@@ -17,7 +17,6 @@ jobs:
         id: release
         with:
           release-type: python
-          package-name: adcp
 
       # Publish to PyPI when a release is created
       - name: Checkout