go.mod: use latest lib/pq (#471)

Co-authored-by: Kyle Conroy <kyle@conroy.org>

Author: kevinburke1

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/google/go-cmp v0.3.0
 	github.com/jinzhu/inflection v1.0.0
 	github.com/lfittl/pg_query_go v1.0.0
-	github.com/lib/pq v1.3.0
+	github.com/lib/pq v1.4.0
 	github.com/pingcap/parser v0.0.0-20200218113622-517beb2e39c2
 	github.com/pingcap/tidb v1.1.0-beta.0.20200219045929-1344d6ddd9e7
 	github.com/spf13/cobra v0.0.5

go.sum

@@ -269,6 +269,8 @@ github.com/lfittl/pg_query_go v1.0.0/go.mod h1:jcikG62RKf+NIWmbLzjjk73m4x6um2pKf
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
 github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.4.0 h1:TmtCFbH+Aw0AixwyttznSMQDgbR5Yed/Gg6S8Funrhc=
+github.com/lib/pq v1.4.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/logrusorgru/aurora v0.0.0-20181002194514-a7b3b318ed4e/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=