Update python-slack-sdk to version 3.27.1 / rev 10 via SR 1155397
    
    https://build.opensuse.org/request/show/1155397
    by user StevenK + dimstar_suse
    - Update to 3.27.1:
      * #1459 Fix #1458 internal error within aiohttp-based socket mode
        client - Thanks @seratch @jhofeditz
      * #1450 #1452 Add "slack_file" properties to "image" blocks/elements
        under slack_sdk.models - Thanks @seratch
      * #1466 Fix #1462 websocket_client-based SocketModeClient does not
        reconnect after a DNS outage - Thanks @ktindall-godaddy @seratch
      * #1463 Unpin moto, and support moto 5.0 changes - Thanks
        @s-t-e-v-e-n-k