Bump actions/setup-node from 5 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 5 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v5...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/respec.yaml

@@ -31,7 +31,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-node@v5 # setup Node.js
+      - uses: actions/setup-node@v6 # setup Node.js
         with:
           node-version: "22.x"
 

.github/workflows/schema-publish.yaml

@@ -34,7 +34,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-node@v5 # setup Node.js
+      - uses: actions/setup-node@v6 # setup Node.js
         with:
           node-version: "22.x"
 

.github/workflows/schema-tests.yaml

@@ -23,7 +23,7 @@ jobs:
       with:
         fetch-depth: 0
 
-    - uses: actions/setup-node@v5 # setup Node.js
+    - uses: actions/setup-node@v6 # setup Node.js
       with:
         node-version: '20.x'
 

.github/workflows/validate-markdown.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5 # checkout repo content
 
-      - uses: actions/setup-node@v5 # setup Node.js
+      - uses: actions/setup-node@v6 # setup Node.js
         with:
           node-version: "20.x"