exclude file to fix build (#16423)

build.gradle

@@ -118,6 +118,7 @@ def createSpotlessTarget = { pattern ->
         'charts', // Helm charts often have injected template strings that will fail general linting. Helm linting is done separately.
         'resources/seed/*_specs.yaml', // Do not remove - this is necessary to prevent diffs in our github workflows, as the file diff check runs between the Format step and the Build step, the latter of which generates the file.
         'airbyte-integrations/connectors/source-amplitude/unit_tests/api_data/zipped.json', // Zipped file presents as non-UTF-8 making spotless sad
+        'airbyte-webapp/src/test-utils/mock-data/mockDestinationDefinition.json', // Prettier styling is conflicting with spotless styling in this file making the build fail if not excluded
     ]
 
     if (System.getenv().containsKey("SUB_BUILD")) {