Update PHF

Author: sfackler

codegen/Cargo.toml

@@ -4,6 +4,6 @@ version = "0.1.0"
 authors = ["Steven Fackler <sfackler@gmail.com>"]
 
 [dependencies]
-phf_codegen = "=0.7.20"
+phf_codegen = "=0.7.21"
 regex = "0.1"
 marksman_escape = "0.1"

postgres-shared/Cargo.toml

@@ -18,7 +18,7 @@ with-uuid = ["uuid"]
 [dependencies]
 hex = "0.2"
 fallible-iterator = "0.1.3"
-phf = "=0.7.20"
+phf = "=0.7.21"
 postgres-protocol = "0.2"
 
 bit-vec = { version = "0.4", optional = true }