chore(deps-dev): bump standard-version in /generators/app/templates (#16)

Bumps [standard-version](https://github.com/conventional-changelog/standard-version) from 6.0.1 to 9.0.0.
- [Release notes](https://github.com/conventional-changelog/standard-version/releases)
- [Changelog](https://github.com/conventional-changelog/standard-version/blob/master/CHANGELOG.md)
- [Commits](conventional-changelog/standard-version@v6.0.1...v9.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

generators/app/templates/package.json

@@ -44,7 +44,7 @@
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.0.0",
     "rollup-plugin-typescript2": "^0.21.1",
-    "standard-version": "^6.0.1",
+    "standard-version": "^9.0.0",
     "typescript": "^3.4.5"
   }
 }