chore(deps): bump @equinor/fusion-wc-markdown from 1.5.1 to 1.6.4

Bumps [@equinor/fusion-wc-markdown](https://github.com/equinor/fusion-web-components/tree/HEAD/packages/markdown) from 1.5.1 to 1.6.4.
- [Release notes](https://github.com/equinor/fusion-web-components/releases)
- [Changelog](https://github.com/equinor/fusion-web-components/blob/main/packages/markdown/CHANGELOG.md)
- [Commits](https://github.com/equinor/fusion-web-components/commits/@equinor/fusion-wc-markdown@1.6.4/packages/markdown)

---
updated-dependencies:
- dependency-name: "@equinor/fusion-wc-markdown"
  dependency-version: 1.6.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]