What are your best practices for managing dependencies in your applications and can you share coding examples

Question

This question is asking how you handle dependencies within your applications, and it's also asking about best practices that you follow to make sure all the actual external libraries, frameworks, or other components your application depends upon are tracked, updated, and kept compatible. Coding examples are also requested, showing these practices in action, and from those examples you could get an impression of how dependency management is implemented in real-world scenarios.