[2.4.0] Checkmk Werk 17178 created: Microsoft Teams: Updated notification message

[//]: # (werk v2) # Microsoft Teams: Updated notification message key | value ---------- | --- date | 2024-08-15T09:01:50+00:00 version | 2.4.0b1 class | fix edition | cre component | notifications level | 1 compatible | yes Changes were made to the notification format for Microsoft Teams to reduce whitespace. No user action is required. Formatting rules for the details: * Supports Markdown, see [Microsoft's documentation](https://learn.microsoft.com/en-us/adaptive-cards/authoring-c… * Use `\n\n` for a new line * An empty line will lead to a separator (`\n\n\n\n`)