Use Node v18.18.2 LTS (Iron) (primer#681)

* feat(node): use v18.18.2 LTS – Iron

* fix(workflow): use node version from .nvmrc

> The node-version-file input accepts a path to a file containing
> the version of Node.js to be used by a project, for example .nvmrc,
> .node-version, .tool-versions, or package.json.

https://github.com/actions/setup-node/blob/main/docs/advanced-usage.md#node-version-file

* fix(workflow): remove erroneous option

.github/workflows/ci.yml

@@ -5,9 +5,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - uses: actions/setup-node@master
+      - uses: actions/setup-node@v4
         with:
-          version: 14
+          node-version-file: '.nvmrc'
+          cache: 'yarn'
       - name: install
         run: yarn
       - name: Lint with ESLint
@@ -16,9 +17,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - uses: actions/setup-node@master
+      - uses: actions/setup-node@v4
         with:
-          version: 14
+          node-version-file: '.nvmrc'
+          cache: 'yarn'
       - name: install
         run: yarn
       - name: Lint with markdownlint

.github/workflows/deploy.yml

@@ -32,13 +32,11 @@ jobs:
 
       - name: Checkout default branch
         uses: actions/checkout@v2
-        with:
-          version: 16
 
-      - name: Set up Node
-        uses: actions/setup-node@v2
+      - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version-file: '.nvmrc'
+          cache: 'yarn'
 
       - name: Cache dependencies
         uses: actions/cache@v2

.github/workflows/deploy_preview.yml

@@ -24,13 +24,11 @@ jobs:
 
       - name: Checkout default branch
         uses: actions/checkout@v2
-        with:
-          version: 16
 
-      - name: Set up Node
-        uses: actions/setup-node@v2
+      - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version-file: '.nvmrc'
+          cache: 'yarn'
 
       - name: Cache dependencies
         uses: actions/cache@v2

.nvmrc

@@ -1 +1 @@
-16
+18.18.2