Fix error when updating pin code

[HunsupJung]

Type of Change

• WWST Certification Request
  • If this is your first time contributing code:
    • I have reviewed the README.md file
    • I have reviewed the CODE_OF_CONDUCT.md file
    • I have signed the CLA
  • I plan on entering a WWST Certification Request or have entered a request through the WWST Certification console at developer.smartthings.com
• Bug fix
• New feature
• Refactor

Checklist

• I have performed a self-review of my code
• I have commented my code in hard-to-understand areas
• I have verified my changes by testing with a device or have communicated a plan for testing
• I am adding new behavior, such as adding a sub-driver, and have added and run new unit tests to cover the new behavior

Description of Change

Summary of Completed Tests

https://smartthings.atlassian.net/wiki/spaces/STHK/pages/5381227420/Unable+to+change+guest+PIN+code

[github-actions]

Invitation URL:
https://bestow-regional.api.smartthings.com/invite/q0jmJGLALQM1

[github-actions]

Test Results

   73 files    515 suites   0s ⏱️
2 904 tests 2 903 ✅ 0 💤 1 ❌
4 800 runs  4 799 ✅ 0 💤 1 ❌

For more details on these failures, see this check.

Results for commit 43670c4.

♻️ This comment has been updated with latest results.

[github-actions]

File	Coverage
All files	82%	❌
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-lock/src/new-matter-lock/init.lua	80%	❌
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-lock/src/new-matter-lock/can_handle.lua	90%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-lock/src/lazy_load_subdriver.lua	57%	❌
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-lock/src/init.lua	91%	✅
/home/runner/work/SmartThingsEdgeDrivers/SmartThingsEdgeDrivers/drivers/SmartThings/matter-lock/src/lock_utils.lua	68%	❌

Minimum allowed coverage is 90%

Generated by 🐒 cobertura-action against 43670c4