Update create table for ClickHouse 23.7 version compatibility

Author: mzitnik

flink-connector-clickhouse-1.17/src/test/java/org/apache/flink/connector/clickhouse/sink/ClickHouseSinkTests.java

@@ -218,7 +218,7 @@ void SimplePOJODataTest() throws Exception {
                 "uint64Object UInt64," +
                 "uint128Object UInt128," +
                 "uint256Object UInt256," +
-                "decimal Decimal," +
+                "decimal Decimal(10,5)," +
                 "decimal32 Decimal32(9)," +
                 "decimal64 Decimal64(18)," +
                 "decimal128 Decimal128(38)," +
@@ -506,7 +506,7 @@ void SimplePOJODataTooManyPartsTest() throws Exception {
                 "uint64Object UInt64," +
                 "uint128Object UInt128," +
                 "uint256Object UInt256," +
-                "decimal Decimal," +
+                "decimal Decimal(10,5)" +
                 "decimal32 Decimal32(9)," +
                 "decimal64 Decimal64(18)," +
                 "decimal128 Decimal128(38)," +