[Patch] Added call block

[KarimNahas]

PR Content:

• Added call block to the list of accepted blocks.

Note: this is needed to be able to parse Zoom bot messages.

[KarimNahas]

@kanata2 Not too sure if I should add any additional tests for this, as call blocks are not really well documented.
Thanks!

[petehamilton]

We've done something very similar in our fork 😄 - @kanata2 anything we can do to help get this merged?

[kanata2]

Sorry for my slow response. I'll confirm later.

@petehamilton Thanks for your help 🙏

[sophiekoonin]

@kanata2 Hey! Would it be possible to get this merged in? We really need it for our project.

[kanata2]

@sophiekoonin I'll confirm later. Sorry for bothering you.

[sophiekoonin]

@kanata2 Thank you so much ❤️

[zchee]

@KarimNahas Hi, this is newer slack-go maintainer.

I can review it ASAP. So sorry, could you rebase it?

cc: @petehamilton @sophiekoonin

[github-actions]

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[github-actions]

This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 10 days.