bump nanoid to 3.3.18 with 'npm audit fix'

[will-moore]

Fixes warning:

$ npm audit
# npm audit report

nanoid  <3.3.18
Severity: high
nanoid: custom generators can loop indefinitely when size is zero - https://github.com/advisories/GHSA-2v37-7h3g-55p8

[will-moore]

Tested locally with $ npm run build and $ npm run dev 👍