Update dependency mobx to v6.9.0

Author: renovate[bot]

package.json

@@ -65,7 +65,7 @@
     "expo-web-browser": "~11.0.0",
     "firebase": "^9.13.0",
     "i18n-js": "3.9.2",
-    "mobx": "6.6.0",
+    "mobx": "6.9.0",
     "mobx-react-lite": "3.4.0",
     "mobx-state-tree": "5.1.6",
     "react": "18.0.0",

yarn.lock

@@ -11660,10 +11660,10 @@ mobx-state-tree@5.1.6:
   resolved "https://registry.yarnpkg.com/mobx-state-tree/-/mobx-state-tree-5.1.6.tgz#b4c444d1c385ae736440739a93c8e6e1169eecee"
   integrity sha512-t4YNI3taTvDTMCyjA/bmX90HpPUMJEHX1OvyJqbfR6iOIWkJk+JbWc1aozIZxh2M5VA8xtHGnzu/2YGzSPUpJQ==
 
-mobx@6.6.0:
-  version "6.6.0"
-  resolved "https://registry.yarnpkg.com/mobx/-/mobx-6.6.0.tgz#617ca1f3b745a781fa89c5eb94a773e3cbeff8ae"
-  integrity sha512-MNTKevLH/6DShLZcmSL351+JgiJPO56A4GUpoiDQ3/yZ0mAtclNLdHK9q4BcQhibx8/JSDupfTpbX2NZPemlRg==
+mobx@6.9.0:
+  version "6.9.0"
+  resolved "https://registry.yarnpkg.com/mobx/-/mobx-6.9.0.tgz#8a894c26417c05bed2cf7499322e589ee9787397"
+  integrity sha512-HdKewQEREEJgsWnErClfbFoVebze6rGazxFLU/XUyrII8dORfVszN1V0BMRnQSzcgsNNtkX8DHj3nC6cdWE9YQ==
 
 mocha@6:
   version "6.2.3"