chore(deps): bump @washingtonpost/tachyons-css from 1.6.0 to 1.8.0 (#418

)

Bumps [@washingtonpost/tachyons-css](https://github.com/washingtonpost/tachyons-css) from 1.6.0 to 1.8.0.
- [Release notes](https://github.com/washingtonpost/tachyons-css/releases)
- [Changelog](https://github.com/washingtonpost/tachyons-css/blob/main/CHANGELOG.md)
- [Commits](washingtonpost/tachyons-css@v1.6.0...v1.8.0)

---
updated-dependencies:
- dependency-name: "@washingtonpost/tachyons-css"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.washingtonpost.com/package.json

@@ -22,7 +22,7 @@
     "@radix-ui/react-toggle-group": "^1.0.1",
     "@stitches/react": "1.2.8",
     "@washingtonpost/site-favicons": "^0.1.3",
-    "@washingtonpost/tachyons-css": "^1.7.3",
+    "@washingtonpost/tachyons-css": "^1.8.0",
     "@washingtonpost/wpds-accordion": "1.6.2",
     "@washingtonpost/wpds-assets": "^1.19.2",
     "@washingtonpost/wpds-kitchen-sink": "1.6.2",