feat: adding support for node 18, dropping node 12 (#406)

* feat: adding support for node 18, dropping node 12

* chore: bump the root lockfile

* ci: installing the latest npm 8 in most environmnets

* ci: install npm8 everywhere in ci

* ci: debugging

* fix: add --ignore-scripts to `npm ci` in github action

I think we were reliant on buggy behaviour in npm@7 where `npm ci`
wasn't running some of the lifecycle hooks:
npm/cli#1905 (comment)

This got fixed in npm@8 but now our CI process breaks:
npm/cli@d825e90

Decided to follow the recommendations from husky's docs to do this so it
doesnt run the `prepare` step:

```sh
npm ci --ignore-scripts
```

https://github.com/typicode/husky/blob/0bcdac6b4dad6eedecc49cf3837ecc05b321db2e/docs/README.md#disable-husky-in-cidockerprod=

Co-authored-by: Dom Harrington <[email protected]>

.github/workflows/nodejs.yml

@@ -14,23 +14,22 @@ jobs:
         # node 16.14.2 ships with a buggy version of npm 🤷‍♂️
         # https://github.com/nodejs/node/issues/42397
         # TODO revert this back to 16.x when node pushes a new version
-        node-version: [12.x, 14.x, 16.14.0]
+        node-version:
+          - 14
+          - 16.14.0
+          - 18
 
     steps:
       - uses: actions/checkout@v3
-
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
-
-      - name: Install npm@7
-        run: npm install -g npm@7
-
-      - name: Install deps
-        run: npm ci
 
-      - name: Run tests
-        run: npm test
+      # Node 14 still ships with npm@6 so for compatibility reasons we're upping
+      # this to match everything else.
+      - name: Install npm@8
+        if: matrix.node-version == '14'
+        run: npm install -g npm@8
 
-        env:
-          CI: true
+      - run: npm ci --ignore-scripts
+      - run: npm test