Remove lru-dict dependency from annotation service

[cakeinsauce]

@djo753 Annotation service uses lru-dict = "1.2.0" dependency which implements dict like structure with LRU cache functionallity. We should remove it as this dependency not well maintained and from unknown developer.

A/C:

• [ ] lru-dict dependency is removed from poetry dependencies list
• [ ] annotation/annotation/tasks/services.py LRU dict cache usage is replaced with new implementation using built in python capabilities

DOD:

• [ ] lru-dict is removed
• [ ] code is covered with tests
• [ ] functionallity is tested manually with fully working badgerdoc

[djo753]

Will do!

[djo753]

Published a PR with the changes needed to cover this issue: https://github.com/epam/badgerdoc/pull/940