Bump markdown-include from 0.7.0 to 0.8.0 in /CI (#1213)

Bumps [markdown-include](https://github.com/cmacmackin/markdown-include) from 0.7.0 to 0.8.0.
- [Release notes](https://github.com/cmacmackin/markdown-include/releases)
- [Commits](https://github.com/cmacmackin/markdown-include/compare/v0.7.0...v0.8.0)

---
updated-dependencies:
- dependency-name: markdown-include
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: rolandtyler <88206508+rolandtyler@users.noreply.github.com>

CI/requirements.txt

@@ -1,5 +1,5 @@
 markdown-fenced-code-tabs==1.0.5
-markdown-include==0.7.0
+markdown-include==0.8.0
 mkdocs-markdownextradata-plugin==0.2.5
 mkdocs-exclude==1.0.2
 mkdocs-redirects==1.2.0