7.0.0-beta.2

• (breaking) feat(tracing): Add empty baggage header propagation to outgoing requests (#5133)
• feat: Add attachments API (#5004)
• feat(core): Send Baggage in Envelope Header (#5104)
• feat(utils): Introduce Baggage API (#5066)
• fix(build): Fix express import in gcpfunction (#5097)
• fix(ember): Export sha hashes of injected scripts (#5089)
• ref(build): Use sucrase for es6 bundles (#5111)
• ref(serverless): Do not throw on flush error (#5090)
• ref(serverless): Point DSN to relay in lambda extension (#5126)
• ref(tracing): Rename baggage env header to trace (#5128)