Bump actions/setup-node from 4 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v4...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -73,7 +73,7 @@ jobs:
           ${{ runner.os }}-node-
 
     - name: Setup Node
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ env.NODE_VERSION }}
         cache: 'yarn'

.github/workflows/pr-validation.yml

@@ -80,7 +80,7 @@ jobs:
           ${{ runner.os }}-node-
 
     - name: Setup Node
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ env.NODE_VERSION }}
         cache: 'yarn'
@@ -163,7 +163,7 @@ jobs:
           ${{ runner.os }}-node-
 
     - name: Setup Node
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ env.NODE_VERSION }}
         cache: 'yarn'
@@ -321,7 +321,7 @@ jobs:
           ${{ runner.os }}-node-
 
     - name: Setup Node
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ env.NODE_VERSION }}
         cache: 'yarn'