1. fix dependency

drivers/pgxv4/go.mod

@@ -16,3 +16,5 @@ exclude (
 	github.com/jackc/pgconn v1.14.3
 	golang.org/x/text v0.14.0
 )
+
+exclude golang.org/x/text v0.14.0

drivers/pgxv5/go.mod

@@ -8,19 +8,4 @@ require (
 	github.com/pashagolub/pgxmock/v2 v2.12.0
 	github.com/stretchr/testify v1.8.2
 	go.uber.org/goleak v1.3.0
-)
-
-require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/golang/mock v1.6.0 // indirect
-	github.com/jackc/pgpassfile v1.0.0 // indirect
-	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
-	github.com/jackc/puddle/v2 v2.2.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
-	go.uber.org/multierr v1.9.0 // indirect
-	golang.org/x/crypto v0.17.0 // indirect
-	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
-)
+)

sh/go.test.sh

@@ -12,12 +12,22 @@ golist() {
   go list ./... | grep -v mock | grep -v internal/
 }
 
+verlte() {
+    printf '%s\n%s' "$1" "$2" | sort -C -V
+}
+
 gotest() {
   cd $driver
 
-  go test -mod=readonly -race $(golist) "$@"
+  local go_mod_ver=$(sed -En 's/^go (.*)$/\1/p' go.mod)
+  local go_ver=$(go1.16 version | sed -n 's/.*go\([0-9.]*\).*/\1/p')
 
-  local exit_code=$?
+  local exit_code=0
+  if verlte $go_mod_ver $go_ver; then
+
+    go1.16 test -race -mod=readonly $(golist) "$@"
+    exit_code=$?
+  fi
 
   cd $ROOT