Reranker should be unique per project

[TamiTakamiya]

Description

#228 had a bug. It introduced "Reranker", which was suppsed to be provided per project, but in docs_summarizer.py, the OLS-version of reranker was statically linked to the code. This PR is for fixing that issue.

Type of change

• Refactor
• New feature
• Bug fix
• CVE fix
• Optimization
• Documentation Update
• Configuration Update
• Bump-up dependent library
• Bump-up library or tool used for development (does not change the final image)
• CI configuration change
• Konflux configuration change

Related Tickets & Documents

• Related Issue # n/a
• Closes # n/a

Checklist before requesting a review

• I have performed a self-review of my code.
• PR has passed all pre-merge test jobs.
• If it is a core feature, I have added thorough tests.

Testing

• Please provide detailed steps to perform tests related to this code change.
• How were the fix/results from this change verified? Please provide relevant screenshots or results.

Issue a regular /query call to make sure that it is processed correctly.

[tisnik]

it looks ok