Fix release action: remove invalid --target flag from gh release create (#114)

The --target flag was passing the tag name (e.g. "v0.2.0") as target_commitish,
which GitHub API rejects with HTTP 422. Since the tag is already pushed before
this step runs, gh release create automatically resolves the tag's commit.

https://claude.ai/code/session_019YFSdMW7TobZNsmey63CYm

Co-authored-by: Claude <noreply@anthropic.com>

Author: jancurn

.github/workflows/release.yml

@@ -223,5 +223,4 @@ jobs:
           VERSION="${{ steps.release.outputs.version }}"
           gh release create "v${VERSION}" \
             --title "v${VERSION}" \
-            --generate-notes \
-            --target "v${VERSION}"
+            --generate-notes