Easy to reproduce:
### 20.3.13
```
SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
                }
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000203731,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```

### 20.4.5
```
:) select 1 format JSON

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000771732,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```
### master
```

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.00103364,
                "rows_read": 1,
                "bytes_read": 1
        }
}

```

size_t ritten_progress_chars = 0
    bool ritten_first_block = false
    /// External bles info.
    std::lal_bles
    /// Dictionary ith query parameters for prepared stements.
    NameToNameMap query_parameters
    ConnectionParameters connection_parameters
    QueryFuzzer fuzzer
    int query_fuzzer_runs = 0
    void initialize(Poco::Util::Applition & self) override
    {
        Poco::Util::Applition::initialize(self)
        const char * home_path_cstr = getenv("HOME")
        if (home_path_cstr)
            home_path = home_path_cstr
        configReadClient(config(), home_path)
        context.setApplitionType(Context::ApplitionType::CLIENT)
        context.setQueryParameters(query_parameters)
        /// settings and limits could be specified in config file, but passed settings has higher priority
        for (const auto & seallUnchanged())
        {
            const auto & name = setting.getName()
            if (config().has(name))
                context.setSetting(name, config().getString(name))
        
        /// Set path for format schema files
        hema_path"))
            context.setFormatSchemaPath(Poco::Path(config().getString("format_schema_path")).toString())
    
    int main(const std::vector<std::string> & /*args*/) override