Bump underscore from 1.13.1 to 1.13.8 (#2102)

Bumps [underscore](https://github.com/jashkenas/underscore) from 1.13.1 to 1.13.8.
- [Commits](jashkenas/underscore@1.13.1...1.13.8)

---
updated-dependencies:
- dependency-name: underscore
  dependency-version: 1.13.8
  dependency-type: indirect
...

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Author: dependabot[bot]

yarn.lock

@@ -4348,9 +4348,9 @@ uglify-js@^3.7.7:
   integrity "sha1-t3i6CDHKECwdjsvewtK9/Mc1MZA= sha512-FEikl6bR30n0T3amyBh3LoiBdqHRy/f4H80+My34HOesOKyHfOsxAPAxOoqC0JUnC1amnO0IwkYC3sko51caSw=="
 
 underscore@^1.12.1, underscore@~1.13.2:
-  version "1.13.1"
-  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.1.tgz#0c1c6bd2df54b6b69f2314066d65b6cde6fcf9d1"
-  integrity "sha1-DBxr0t9UtrafIxQGbWW2zeb8+dE= sha512-hzSoAVtJF+3ZtiFX0VgfFPHEDRm7Y/QPjGyNo4TVdnDTdft3tr8hEkD25a1jC+TjTuE7tkHGKkhwCgs9dgBB2g=="
+  version "1.13.8"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.8.tgz#a93a21186c049dbf0e847496dba72b7bd8c1e92b"
+  integrity sha512-DXtD3ZtEQzc7M8m4cXotyHR+FAS18C64asBYY5vqZexfYryNNnDc02W4hKg3rdQuqOYas1jkseX0+nZXjTXnvQ==
 
 union-value@^1.0.0:
   version "1.0.1"