Perf regression: json_fasthttp

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
json_fasthttp	Go Json aspnet-citrine-lin	05/14/2021 22:33:24	1,282,779	1,258,898	-1.86 % (-23,881) 👎	-3.65 σ	6,549.84	Changes Name Version Diff

@sebastienros