Fix for #3951 invalid auth.log (#3952)

Fix for #3951 invalid auth.log

# Description of Changes

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## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

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- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

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### Testing (if applicable)

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for more details.

app/core/src/main/resources/logback.xml

@@ -40,7 +40,7 @@
     </root>
 
     <!-- Specific Logger -->
-    <logger name="stirling.software.SPDF.config.security.CustomAuthenticationFailureHandler"
+    <logger name="stirling.software.proprietary.security.CustomAuthenticationFailureHandler"
             level="ERROR" additivity="false">
         <appender-ref ref="CONSOLE"/>
         <appender-ref ref="AUTHLOG"/>