Fix go modules

Wow. This is fun. Sure is easy to get modules wrong when upgrading a v2+
project.

log/log15adapter/adapter.go

@@ -3,7 +3,7 @@
 package log15adapter
 
 import (
-	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/v4"
 )
 
 // Log15Logger interface defines the subset of

log/logrusadapter/adapter.go

@@ -3,7 +3,7 @@
 package logrusadapter
 
 import (
-	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/v4"
 	"github.com/sirupsen/logrus"
 )
 

log/testingadapter/adapter.go

@@ -5,7 +5,7 @@ package testingadapter
 import (
 	"fmt"
 
-	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/v4"
 )
 
 // TestingLogger interface defines the subset of testing.TB methods used by this

log/zapadapter/adapter.go

@@ -2,7 +2,7 @@
 package zapadapter
 
 import (
-	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/v4"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 )

log/zerologadapter/adapter.go

@@ -2,7 +2,7 @@
 package zerologadapter
 
 import (
-	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/v4"
 	"github.com/rs/zerolog"
 )