build: Bump aetna from 1.0.0-alpha.0 to 1.0.0-alpha.3 (#75)

Bumps [aetna](https://github.com/pressbooks/aetna) from 1.0.0-alpha.0 to 1.0.0-alpha.3.
- [Release notes](https://github.com/pressbooks/aetna/releases)
- [Commits](https://github.com/pressbooks/aetna/compare/1.0.0-alpha.0...1.0.0-alpha.3)

package-lock.json

@@ -284,9 +284,9 @@
       }
     },
     "aetna": {
-      "version": "1.0.0-alpha.0",
+      "version": "1.0.0-alpha.3",
-      "resolved": "https://registry.npmjs.org/aetna/-/aetna-1.0.0-alpha.0.tgz",
+      "resolved": "https://registry.npmjs.org/aetna/-/aetna-1.0.0-alpha.3.tgz",
-      "integrity": "sha512-AxjejoGeiv0OsQNuusC5A50ByuoXknA6SKjD/d0AMV3tCJuX26lZq1bnpTalVjqtk6Kzyo6nHU2nKzjltlTR+Q==",
+      "integrity": "sha512-2/2ymhwu74C3DYaX+6Y4b5j5jh0DaXnBWfyMh1DU2H64i2ib5dSKA2oYUFv1vQnL7niplxWUrmGBXaisL1i28Q==",
       "requires": {
         "@frctl/fractal": "1.1.7"
       }