Remove use of github.com/lib/pq as direct dependency

Author: adamkpickering

go.mod

@@ -178,7 +178,7 @@ require (
 	github.com/json-iterator/go v1.1.12
 	github.com/julienschmidt/httprouter v1.3.0 // replaced
 	github.com/keys-pub/go-libfido2 v1.5.3-0.20220306005615-8ab03fb1ec27 // replaced
-	github.com/lib/pq v1.10.9
+	github.com/lib/pq v1.10.9 // indirect
 	github.com/mailgun/mailgun-go/v4 v4.23.0
 	github.com/mark3labs/mcp-go v0.43.0
 	github.com/mattn/go-shellwords v1.0.12

lib/srv/db/postgres/users.go

@@ -32,7 +32,6 @@ import (
 	"github.com/jackc/pgconn"
 	"github.com/jackc/pgerrcode"
 	"github.com/jackc/pgx/v4"
-	"github.com/lib/pq"
 
 	"github.com/gravitational/teleport/api/types"
 	apiawsutils "github.com/gravitational/teleport/api/utils/aws"
@@ -254,7 +253,7 @@ func (e *Engine) applyPermissions(ctx context.Context, sessionCtx *common.Sessio
 		return trace.Wrap(err)
 	})
 	if err != nil {
-		var pgErr *pq.Error
+		var pgErr *pgconn.PgError
 		if errors.As(err, &pgErr) {
 			if pgErr.Code == common.SQLStatePermissionsChanged {
 				logger.ErrorContext(ctx, "User permissions have changed, rejecting connection",