Bump semistandard from 14.2.3 to 15.0.0

Bumps [semistandard](https://github.com/standard/semistandard) from 14.2.3 to 15.0.0.
- [Release notes](https://github.com/standard/semistandard/releases)
- [Changelog](https://github.com/standard/semistandard/blob/master/CHANGELOG.md)
- [Commits](standard/semistandard@v14.2.3...v15.0.0)

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

package.json

@@ -32,7 +32,7 @@
     "mocha": "^8.1.1",
     "nyc": "^15.1.0",
     "pg": "^8.0.0",
-    "semistandard": "^14.2.0"
+    "semistandard": "^15.0.0"
   },
   "keywords": [
     "node-pg",