Bump mobx from 5.15.1 to 5.15.4 (#84)

Bumps [mobx](https://github.com/mobxjs/mobx) from 5.15.1 to 5.15.4.
- [Release notes](https://github.com/mobxjs/mobx/releases)
- [Changelog](https://github.com/mobxjs/mobx/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mobxjs/mobx/compare/5.15.1...5.15.4)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -22,7 +22,7 @@
     "date-fns": "^2.11.1",
     "dotenv": "^8.2.0",
     "lodash": "^4.17.11",
-    "mobx": "^5.15.1",
+    "mobx": "^5.15.4",
     "mobx-react": "^6.1.4",
     "prop-types": "^15.6.2",
     "query-string": "^6.9.0",

yarn.lock

@@ -5216,10 +5216,10 @@ mobx-react@^6.1.4:
   dependencies:
     mobx-react-lite "^1.4.2"
 
-mobx@^5.15.1:
-  version "5.15.1"
-  resolved "https://registry.yarnpkg.com/mobx/-/mobx-5.15.1.tgz#ba07807808b3f9dc3e6b0a74ba69bcccc6df4ece"
-  integrity sha512-o4aN0GqKcDmKwu2wVsqbujU4F63ZvmbBLSc7WhzuAu9S9eF2wgNjqIkzrb/kbY3C9/mGYG4k1M0KbCuG1GJ7IQ==
+mobx@^5.15.4:
+  version "5.15.4"
+  resolved "https://registry.yarnpkg.com/mobx/-/mobx-5.15.4.tgz#9da1a84e97ba624622f4e55a0bf3300fb931c2ab"
+  integrity sha512-xRFJxSU2Im3nrGCdjSuOTFmxVDGeqOHL+TyADCGbT0k4HHqGmx5u2yaHNryvoORpI4DfbzjJ5jPmuv+d7sioFw==
 
 move-concurrently@^1.0.1:
   version "1.0.1"