feat: bump API build target 16.20

[thedavidprice]

The latest Node.js v16 LTS release is 16.20

Projects will need to upgrade local dev and serverless functions to support > 16.20

For providers like Vercel and Netlify, unless there's a set semver minor (rare), I expect this to be fine.

Note: as of now, Netlify does NOT support AWS Lambdas on v18, which is the only reason we've held off from bumping everything to v18

[replay-io]

16 replays were recorded for 892b3e3.

0 Failed

16 Passed

requireAuth graphql checks

    ```
    locator.waitFor: Target closed
    =========================== logs ===========================
    waiting for locator('.rw-form-error-title').locator('text=You don\'t have permission to do that') to be visible
    ============================================================
    ```
  </ol>
</details>
<li><a href=https://app.replay.io/recording/a61a3229-4597-4af5-b5fd-9c223e7a350f>useAuth hook, auth redirects checks</a></li>
<li><a href=https://app.replay.io/recording/3437b86f-34d1-4610-956b-deb14a181b7a>Check that a specific blog post is prerendered</a></li>
<li><a href=https://app.replay.io/recording/bc408cf6-b091-44db-96eb-f472637f2b9e>Check that about is prerendered</a></li>
<li><a href=https://app.replay.io/recording/22166f9d-ea96-4212-9887-4ad7d4d4cfcc>Check that homepage is prerendered</a></li>
<li><a href=https://app.replay.io/recording/e3af3ae3-23e3-460c-957a-9e0931407d26>Check that meta-tags are rendering the correct dynamic data</a></li>
<li><a href=https://app.replay.io/recording/8b2d56ee-936e-4bb1-89c7-f5e6a438a71e>Check that you can navigate from home page to specific blog post</a></li>
<li><a href=https://app.replay.io/recording/a3e35cb9-19ee-450e-aee3-177bace5ce9a>Waterfall prerendering (nested cells)</a></li>
<li><a href=https://app.replay.io/recording/15e872ea-fb27-411b-be87-3bf9caf62ba9>RBAC: Admin user should be able to delete contacts</a></li>
<li><a href=https://app.replay.io/recording/d3e9bfb5-4697-4598-ae1f-c1293fbac418>RBAC: Should not be able to delete contact as non-admin user</a></li>
<li><a href=https://app.replay.io/recording/6ea6a312-eef9-4770-b246-7990e7414f70>Smoke test with dev server</a></li>
<li><a href=https://app.replay.io/recording/e2d17f26-cf5a-406e-9dba-0acf58144c10>Smoke test with rw serve</a></li>
<li><a href=https://app.replay.io/recording/b8c20d6e-37f9-4d17-b815-65aee73d3b61>Loads Cell mocks when Cell is nested in another story</a></li>
<li><a href=https://app.replay.io/recording/210974ae-bf16-4614-a267-f76ce5476c94>Loads Cell Stories</a></li>
<li><a href=https://app.replay.io/recording/a3538973-3914-427c-8fe7-f25d3c3d78af>Loads MDX Stories</a></li>
<li><a href=https://app.replay.io/recording/b4927db4-0870-4fe2-b2c4-9ffd9a57319d>Mocks current user, and updates UI while dev server is running</a></li>

View test run on Replay ↗︎