Keep criterion dev-dependency to 0.5, pprof is not yet compatible with 0.6

Author: chifflier

Cargo.toml

@@ -50,7 +50,7 @@ nom = "8.0"
 rusticata-macros = "5.0"
 
 [dev-dependencies]
-criterion = { version="0.6", features=["html_reports"] }
+criterion = { version="0.5", features=["html_reports"] }
 hex-literal = "1.0"
 pprof = { version="0.15", features=["criterion","flamegraph"] }