Bump underscore from 1.12.1 to 1.13.8

Bumps [underscore](https://github.com/jashkenas/underscore) from 1.12.1 to 1.13.8.
- [Commits](jashkenas/underscore@1.12.1...1.13.8)

---
updated-dependencies:
- dependency-name: underscore
  dependency-version: 1.13.8
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "sqlite": "^4.0.11",
     "sqlite3": "^5.1.7",
     "supervisor": "^0.12.0",
-    "underscore": "^1.12.1"
+    "underscore": "^1.13.8"
   },
   "devDependencies": {
     "eslint": "^7.2.0",