♻️ change message pattern from text to json on logback

[geoje]

• below is previous message pattern on logback

            <message>
                <pattern>
                    {
                    "level":"%level",
                    "class":"%logger{36}",
                    "thread":"%thread",
                    "message": "%replace(%replace(%message){"\\","\\\\"}){"\"","\\\""}"
                    }
                </pattern>
            </message>

• when exeception occured, spring send broken json to loki. and grafana cannot convert it correctly. (stack trace is just added on the end of json message

• loki4j that we already use provide us to json message layout default (https://loki4j.github.io/loki-logback-appender/docs/jsonlayout)

<appender name="LOKI" class="com.github.loki4j.logback.Loki4jAppender">
    <format>
        ...
        <message class="com.github.loki4j.logback.JsonLayout" />
    </format>
    ...
</appender>

[github-actions]

Branch be/feat/345 created!