v12: deprecated globalThis.mergeObject

[ceriath]

Error: You are accessing globalThis.mergeObject which must now be accessed via foundry.utils.mergeObject
Deprecated since Version 12
Backwards-compatible support will be removed in Version 14
    at Object.logCompatibilityWarning (foundry-esm.js:4605:19)
    at get (foundry-esm.js:65215:25)
    at get defaultOptions (actor-sheet.mjs:13:9)
    at CandelafvttActorSheet._getInheritanceChain (foundry.js:5871:23)
    at CandelafvttActorSheet._callHooks (foundry.js:5892:41)
    at CandelafvttActorSheet._getHeaderButtons (foundry.js:6052:10)
    at CandelafvttActorSheet._getHeaderButtons (foundry.js:7215:25)
    at CandelafvttActorSheet._getHeaderButtons (foundry.js:74104:25)
    at CandelafvttActorSheet._renderOuter (foundry.js:5946:27)
    at CandelafvttActorSheet._renderOuter (foundry.js:7144:30)