fix: add missing conventional-changelog-conventionalcommits dependency for semantic-release

Resolves CI failure where semantic-release was unable to find the 'conventional-changelog-conventionalcommits' module
required by the conventionalcommits preset in the @semantic-release/commit-analyzer configuration.

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

Co-Authored-By: Claude <[email protected]>

Author: nkmr-jp

package-lock.json

@@ -39,6 +39,7 @@
     "@semantic-release/changelog": "^6.0.3",
     "@semantic-release/git": "^10.0.1",
     "@semantic-release/github": "^11.0.3",
+    "conventional-changelog-conventionalcommits": "^8.0.0",
     "@types/jest": "^29.5.14",
     "@types/js-yaml": "^4.0.9",
     "@types/node": "20.17.57",