build(deps): 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] <support@github.com>

Author: dependabot[bot]

.github/workflows/code-scanning.yml

@@ -76,7 +76,7 @@ jobs:
 
       - name: Set up Node.js
         if: matrix.language == 'go'
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "20"
           cache: "npm"

.github/workflows/docs-check.yml

@@ -17,7 +17,7 @@ jobs:
       uses: actions/checkout@v6
 
     - name: Set up Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: "20"
         cache: "npm"

.github/workflows/go.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "20"
           cache: "npm"

.github/workflows/goreleaser.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "20"
           cache: "npm"

.github/workflows/license-check.yml

@@ -33,7 +33,7 @@ jobs:
         run: gh pr checkout ${{ github.event.pull_request.number }}
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "20"
           cache: "npm"

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: "20"
           cache: "npm"

.github/workflows/mcp-diff.yml

@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'