fix: Use BulkImportUser instead of BulkImportUserInfo

[anku255]

Summary of change

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Related issues

• Bulk User Import into SuperTokens supertokens-core#912

Test Plan

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Documentation changes

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Checklist for important updates

• Changelog has been updated
• pluginInterfaceSupported.json file has been updated (if needed)
• Changes to the version if needed
  • In build.gradle
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