Bump lodash from 4.17.4 to 4.17.15 in /src/Midinette.Fable

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.4 to 4.17.15.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.4...4.17.15)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Midinette.Fable/yarn.lock

@@ -1666,8 +1666,8 @@ lodash.keys@^3.0.0:
     lodash.isarray "^3.0.0"
 
 lodash@^4.14.0, lodash@^4.17.4:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+  version "4.17.15"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
 
 longest@^1.0.1:
   version "1.0.1"