Release v1.27.0

This release focuses on significant architectural improvements for performance
and robustness, including full context propagation for database operations and
dependency injection in background tasks.

Changed

• Refactor the scheduler and vulnerability jobs to use explicit database
  dependency injection instead of global state, improving testability and
  architectural decoupling.
• Update all controller database operations to be context-aware, using
  QueryContext, QueryRowContext, and BeginTx to ensure request-scoped
  cancellation and prevent database connection pool exhaustion.
• Bump github.com/lib/pq from 1.12.1 to 1.12.3 by @dependabot[bot] in #115
• Bump github.com/coreos/go-oidc/v3 from 3.17.0 to 3.18.0 by @dependabot[bot] in #116
• Bump github.com/tavsec/gin-healthcheck from 1.7.14 to 1.7.15 by @dependabot[bot] in #117

Fixed

• Prevent goroutine leaks in API key middleware by implementing bounded timeouts
  using context.WithTimeout for asynchronous last_used_at updates.
• Improve panic recovery in asset deletion by logging the affected machine ID
  context before re-panicking to Gin's middleware.
• Fix test suite compatibility by updating function signatures in all existing
  test files to match the new context-aware and dependency-injected
  architecture.

Full Changelog: v1.26.1...v1.27.0