fix(mysql): quote database name in CREATE DATABASE statement

In order to allow the full Unicode Basic Multilingual Plane in the
database name, the name is now quoted in the CREATE DATABASE statement.

pkg/drivers/mysql/mysql.go

@@ -5,6 +5,7 @@ import (
 	cryptotls "crypto/tls"
 	"database/sql"
 	"fmt"
+	"strings"
 
 	"github.com/go-sql-driver/mysql"
 	"github.com/k3s-io/kine/pkg/drivers/generic"
@@ -137,7 +138,7 @@ func createDBIfNotExist(dataSourceName string) error {
 	if err != nil {
 		return err
 	}
-	dbName := config.DBName
+	dbName := quoteIdentifier(config.DBName)
 
 	db, err := sql.Open("mysql", dataSourceName)
 	if err != nil {
@@ -188,3 +189,7 @@ func prepareDSN(dataSourceName string, tlsConfig *cryptotls.Config) (string, err
 
 	return parsedDSN, nil
 }
+
+func quoteIdentifier(id string) string {
+	return "`" + strings.ReplaceAll(id, "`", "``") + "`"
+}