Vendor dependencies

vendor/github.com/lib/pq/conn_go18.go

@@ -79,7 +79,7 @@ func (cn *conn) Ping(ctx context.Context) error {
 	if finish := cn.watchCancel(ctx); finish != nil {
 		defer finish()
 	}
-	rows, err := cn.simpleQuery("SELECT 'lib/pq ping test';")
+	rows, err := cn.simpleQuery(";")
 	if err != nil {
 		return driver.ErrBadConn // https://golang.org/pkg/database/sql/driver/#Pinger
 	}

vendor/github.com/lib/pq/copy.go

@@ -229,7 +229,7 @@ func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) {
 	}
 
 	if len(v) == 0 {
-		return nil, ci.Close()
+		return driver.RowsAffected(0), ci.Close()
 	}
 
 	numValues := len(v)

vendor/github.com/lib/pq/encode.go

@@ -487,7 +487,7 @@ func FormatTimestamp(t time.Time) []byte {
 	b := []byte(t.Format("2006-01-02 15:04:05.999999999Z07:00"))
 
 	_, offset := t.Zone()
-	offset = offset % 60
+	offset %= 60
 	if offset != 0 {
 		// RFC3339Nano already printed the minus sign
 		if offset < 0 {

vendor/github.com/lib/pq/scram/scram.go

@@ -94,7 +94,7 @@ func (c *Client) Out() []byte {
 	return c.out.Bytes()
 }
 
-// Err returns the error that ocurred, or nil if there were no errors.
+// Err returns the error that occurred, or nil if there were no errors.
 func (c *Client) Err() error {
 	return c.err
 }