Update dependency @slack/web-api to v7.4.0 (#2586)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@slack/web-api](https://slack.dev/node-slack-sdk/web-api) ([source](https://redirect.github.com/slackapi/node-slack-sdk)) | [`7.3.4` -> `7.4.0`](https://renovatebot.com/diffs/npm/@slack%2fweb-api/7.3.4/7.4.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/@slack%2fweb-api/7.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@slack%2fweb-api/7.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@slack%2fweb-api/7.3.4/7.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@slack%2fweb-api/7.3.4/7.4.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>slackapi/node-slack-sdk (@&#8203;slack/web-api)</summary>

### [`v7.4.0`](https://redirect.github.com/slackapi/node-slack-sdk/releases/tag/%40slack/web-api%407.4.0)

[Compare Source](https://redirect.github.com/slackapi/node-slack-sdk/compare/@slack/web-api@7.3.4...@slack/web-api@7.4.0)

### What's Changed

We've released two new APIs for use via `@slack/web-api`:

-   https://api.slack.com/methods/conversations.requestSharedInvite.approve
-   https://api.slack.com/methods/conversations.requestSharedInvite.deny

### Full Changelog

[`a3a06ec`](https://redirect.github.com/slackapi/node-slack-sdk/commit/a3a06ecb) web-api(feat): add support for `conversations.requestShared` `approve` , `deny` APIs ([#&#8203;1843](https://redirect.github.com/slackapi/node-slack-sdk/issues/1843))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] If you want to rebase/retry this PR, check this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/). View the [repository job log](https://developer.mend.io/github/X-oss-byte/Nextjs).