chore(deps): bump the bull-board group across 1 directory with 3 updates

Bumps the bull-board group with 3 updates in the / directory: [@bull-board/api](https://github.com/felixmosh/bull-board/tree/HEAD/packages/api), [@bull-board/fastify](https://github.com/felixmosh/bull-board/tree/HEAD/packages/fastify) and [@bull-board/ui](https://github.com/felixmosh/bull-board/tree/HEAD/packages/ui).


Updates `@bull-board/api` from 6.5.0 to 6.7.7
- [Release notes](https://github.com/felixmosh/bull-board/releases)
- [Changelog](https://github.com/felixmosh/bull-board/blob/master/CHANGELOG.md)
- [Commits](https://github.com/felixmosh/bull-board/commits/v6.7.7/packages/api)

Updates `@bull-board/fastify` from 6.5.0 to 6.7.7
- [Release notes](https://github.com/felixmosh/bull-board/releases)
- [Changelog](https://github.com/felixmosh/bull-board/blob/master/CHANGELOG.md)
- [Commits](https://github.com/felixmosh/bull-board/commits/v6.7.7/packages/fastify)

Updates `@bull-board/ui` from 6.5.0 to 6.7.7
- [Release notes](https://github.com/felixmosh/bull-board/releases)
- [Changelog](https://github.com/felixmosh/bull-board/blob/master/CHANGELOG.md)
- [Commits](https://github.com/felixmosh/bull-board/commits/v6.7.7/packages/ui)

---
updated-dependencies:
- dependency-name: "@bull-board/api"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: bull-board
- dependency-name: "@bull-board/fastify"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: bull-board
- dependency-name: "@bull-board/ui"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: bull-board
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/frontend/src/pages/about-misskey.vue

@@ -109,6 +109,9 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<div>
 							<a style="display: inline-block;" class="pepabo" title="GMO Pepabo" href="https://pepabo.com/" target="_blank"><img style="width: 100%;" src="https://assets.misskey-hub.net/sponsors/gmo_pepabo.svg" alt="GMO Pepabo"></a>
 						</div>
+						<div>
+							<a style="display: inline-block;" class="purpledotdigital" title="Purple Dot Digital" href="https://purpledotdigital.com/" target="_blank"><img style="width: 100%;" src="https://assets.misskey-hub.net/sponsors/purple-dot-digital.jpg" alt="Purple Dot Digital"></a>
+						</div>
 					</div>
 				</FormSection>
 				<FormSection>