[repo] Fix Node versions in Actions

Author: andrewnicols

.github/workflows/fetch-obsolete-pages.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version-file: '.nvmrc'
           cache: yarn
 
       - name: Install dependencies

.github/workflows/lint-pr.yml

@@ -21,7 +21,8 @@ jobs:
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
         with:
-          node-version: "18"
+          node-version-file: '.nvmrc'
+          cache: yarn
 
       - name: Install dependencies
         run: yarn install --immutable

.github/workflows/markdown-lint.yml

@@ -13,7 +13,8 @@ jobs:
       - name: Setup Node.js environment
         uses: actions/setup-node@v4
         with:
-          node-version: "18"
+          node-version-file: '.nvmrc'
+          cache: yarn
 
       - name: Install dependencies
         run: yarn install --immutable

.github/workflows/test-deploy.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version-file: '.nvmrc'
           cache: yarn
 
       - name: Install dependencies

.github/workflows/update-moodle-metadata.yml

@@ -26,7 +26,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version-file: '.nvmrc'
           cache: yarn
 
       - name: Install dependencies

.github/workflows/update-wikimedia.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version-file: '.nvmrc'
           cache: yarn
 
       - name: Install dependencies