Slack display name does not update

[keenan-v1]

Describe the bug
Matterbridge does not seem to pick up on Slack display name changes without stopping and restarting.

To Reproduce
Set up a Slack <-> IRC gateway, chat once. Change your display name on Slack. Chat again.

Expected behavior
I expect it to pull the latest display name.

Screenshots/debug logs
If applicable, add screenshots to help explain your problem.
Use logs from running matterbridge -debug if possible.

Environment (please complete the following information):

• OS: linux
• Matterbridge version: 1.22.3 e45bbe4

Additional context
Please add your configuration file (be sure to exclude or anonymize private data (tokens/passwords))

[irc]
    [irc.rizon]
    Server="irc.rizon.net:6697"
    Nick="SlackBot"
    NickServNick="SlackBot"
    NickServePassword="MyPass"
    UseTLS=true
    SkipTLSVerify=false
    RunCommands=["PRIVMSG nickserv :IDENTIFY MyPass SlackBot"]
    RemoteNickFormat="<{NICK}> "

[slack]
    [slack.myslack]
    Token="xoxb-secrets"
    RemoteNickFormat="<{NICK}> "
    PrefixMessagesWithNick=true


[[gateway]]
name="mychan"
enable=true
    [[gateway.inout]]
    account="irc.rizon"
    channel="#mychan"
    options = { key="withkey" }

    [[gateway.inout]]
    account="slack.myslack"
    channel="mychan"