Bump aetna from 1.0.0-alpha.26 to 1.0.0-alpha.27

Bumps [aetna](https://github.com/pressbooks/pressbooks-book/tree/HEAD/packages/aetna) from 1.0.0-alpha.26 to 1.0.0-alpha.27.
- [Release notes](https://github.com/pressbooks/pressbooks-book/releases)
- [Commits](https://github.com/pressbooks/pressbooks-book/commits/aetna@1.0.0-alpha.27/packages/aetna)

---
updated-dependencies:
- dependency-name: aetna
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -71,7 +71,7 @@
 	},
 	"devDependencies": {},
 	"dependencies": {
-		"aetna": "^1.0.0-alpha.26",
+		"aetna": "^1.0.0-alpha.27",
 		"isotope-layout": "^3.0.6",
 		"jquery-bridget": "^2.0.1"
 	}