Suppression webhooks added; list entry type fixed

What's Changed

• feat(webhooks): add suppression webhooks by @Cisneiros in https://github.com/resend/resend-node/pull/1031
• chore: remove tegami release process by @gabrielmfern in https://github.com/resend/resend-node/pull/1033
• fix: remove object field from suppression list entry type by @felipefreitag in https://github.com/resend/resend-node/pull/1032
• fix(deps): update react monorepo to v19.2.8 by @renovate[bot] in https://github.com/resend/resend-node/pull/1036
• chore: bump version to 6.18.1 by @Cisneiros in https://github.com/resend/resend-node/pull/1038

Full Changelog: https://github.com/resend/resend-node/compare/v6.18.0...v6.18.1