Update to latest pgx dependencies

fixes #61

go.mod

@@ -3,17 +3,17 @@ module github.com/jackc/tern
 go 1.13
 
 require (
-	github.com/Masterminds/goutils v1.1.0 // indirect
+	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/Masterminds/sprig v2.22.0+incompatible
-	github.com/google/uuid v1.1.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/imdario/mergo v0.3.9 // indirect
-	github.com/jackc/pgconn v1.6.1
-	github.com/jackc/pgx/v4 v4.7.1
-	github.com/mitchellh/copystructure v1.0.0 // indirect
-	github.com/spf13/cobra v1.4.0
-	github.com/stretchr/testify v1.6.1
+	github.com/imdario/mergo v0.3.13 // indirect
+	github.com/jackc/pgconn v1.12.1
+	github.com/jackc/pgx/v4 v4.16.1
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/spf13/cobra v1.5.0
+	github.com/stretchr/testify v1.8.0
 	github.com/vaughan0/go-ini v0.0.0-20130923145212-a98ad7ee00ec
-	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d
 )