As an experienced Java developer with over 8 years of experience, I am confident in my ability to resolve the XML parsing error you are experiencing with your JUnit test cases in your Spring Boot 3.x project. My career has heavily focused on Java and J2EE technologies, including extensive hands-on experience with Spring Boot, making me well-suited to tackle the issues you're facing.
Through my years of working with distributed architectures and messaging tools like Kafka, I have developed sharp debugging skills that will prove invaluable in identifying the root cause of your IllegalArgumentException. Additionally, as someone well-versed in working in Cloud environments and CI/CD pipelines integration, I understand the importance of accurate configuration of dependencies and can ensure their compatibility with your Spring Boot version.
My proficiency in analyzing, designing, developing, and debugging software programs will be instrumental in not only fixing the issue but also providing a comprehensive explanation of what went wrong and how I resolved it. Moreover, my passion for algorithms&data structures makes me highly adept at analyzing intricate problems like this one and I assure you that once resolved you won't face it again.I look forward to tackling this challenge and being your go-to freelancer for all your project's needs.