6.18.0

This patch deprecates the frameContextLines option for the Node SDK. The migration documentation details how to migrate off the deprecated frameContextLines option.

• fix(browser): Only set event.stacktrace if we have 1 or more frames (#4614)
• fix(hub): keep hint event id if it's provided (#4577)
• fix(nextjs): Use env variable for build detection (#4608)
• ref(node): Refactor node source fetching into integration (#3729)
• feat(serverless): Added ignoreSentryErrors option for AWS lambda (#4620)

Work in this release contributed by @GoshaEgorian and @ichina. Thank you for your contributions!