Infrastructure: Bump actions/setup-node from 2.1.4 to 2.4.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.1.4 to 2.4.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2.1.4...v2.4.0)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/lint-css.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Node.js
-        uses: actions/setup-node@v2.1.4
+        uses: actions/setup-node@v2.4.0
 
       - uses: xt0rted/stylelint-problem-matcher@v1
 

.github/workflows/lint-html.yml

@@ -33,7 +33,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Node.js
-        uses: actions/setup-node@v2.1.4
+        uses: actions/setup-node@v2.4.0
 
       - name: Install npm dependencies
         run: npm ci

.github/workflows/lint-js.yml

@@ -31,7 +31,7 @@ jobs:
       # setup-node task is used without a particular version in order to load
       # the ESLint problem matchers
       - name: Set up Node.js
-        uses: actions/setup-node@v2.1.4
+        uses: actions/setup-node@v2.4.0
 
       - name: Install npm dependencies
         run: npm ci

.github/workflows/regression.yml

@@ -35,7 +35,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Node.js
-        uses: actions/setup-node@v2.1.4
+        uses: actions/setup-node@v2.4.0
 
       - name: Install npm dependencies
         run: npm ci

.github/workflows/spelling.yml

@@ -34,7 +34,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up Node.js
-        uses: actions/setup-node@v2.1.4
+        uses: actions/setup-node@v2.4.0
 
       - name: Install npm dependencies
         run: npm ci