Update dependency @nestjs/graphql to v7.9.10

Editor assessment

Updating @nestjs/graphql to v7.9.10 under fix(deps) names the dependency and the target version exactly. The fix type follows the project's renovate convention for runtime dependency refreshes and is a valid house choice. The subject fully identifies the change without the diff. No body follows, and none is owed for a version bump; no footers appear. Hygiene is clean: imperative mood, no trailing period, precise subject, no ticket junk, no pasted content. A routine dependency refresh communicated completely in a single unambiguous line.