fix(release): dispatch publish via exec successCmd not step output

The prior pattern relying on steps.semantic-release.outputs did not
fire. Move the publish dispatch into @semantic-release/exec successCmd,
which runs only after a release is actually published and has
nextRelease.version available. Also add GH_TOKEN env for gh CLI
(GITHUB_TOKEN alone is not read by gh).

.github/workflows/release.yml

@@ -14,6 +14,8 @@ jobs:
   release:
     name: Semantic Release
     runs-on: ubuntu-latest
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -40,14 +42,4 @@ jobs:
         id: semantic-release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: npx semantic-release
-
-      - name: Trigger crate publish
-        if: ${{ steps.semantic-release.outputs.new_release_published == 'true' }}
-        env:
-          RELEASE_VERSION: ${{ steps.semantic-release.outputs.next_release_version }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          TAG="v${RELEASE_VERSION}"
-          echo "Tagging and dispatching publish for $TAG"
-          gh workflow run publish.yml --ref main -f tag="$TAG"
+        run: npx semantic-release