chore: update backend dependencies to mitigate vulnerabilities

Description

Update backend dependencies to mitigate vulnerabilities:

• https://github.com/postgres-ai/database-lab-engine/issues/197
• https://github.com/postgres-ai/database-lab-engine/issues/198
• https://github.com/postgres-ai/database-lab-engine/issues/185

Related issue

Examples

Checklist

• MR description has been reviewed
• MR changes are functionally tested
• MR does NOT have API/CLI changes OR there are API/CLI changes and they have been reviewed & DOCS ARE ADJUSTED (reference doc, etc)
• MR does NOT have UI changes OR there are UI changes and they have been reviewed & UX IS REVIEWED