Bump typography from 0.16.17 to 0.16.18

Bumps [typography](https://github.com/KyleAMathews/typography.js) from 0.16.17 to 0.16.18.
- [Release notes](https://github.com/KyleAMathews/typography.js/releases)
- [Commits](KyleAMathews/typography.js@v0.16.17...v0.16.18)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

package-lock.json

@@ -41,7 +41,7 @@
     "slugify": "^1.3.4",
     "string.prototype.includes": "^1.0.0",
     "string.prototype.repeat": "^0.2.0",
-    "typography": "^0.16.17"
+    "typography": "^0.16.18"
   },
   "keywords": [
     "gatsby",