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] <[email protected]>

Author: dependabot[bot]

.github/workflows/contracts.yml

@@ -43,7 +43,7 @@ jobs:
         uses: hrishikesh-kadam/setup-lcov@6c1aa0cc9e1c02f9f58f01ac599f1064ccc83470 # v1
 
       - name: Install Node.js 18
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '18'
 
@@ -104,7 +104,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Node.js 18
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '18'
 
@@ -152,7 +152,7 @@ jobs:
           submodules: recursive
           persist-credentials: false
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: '18'
 

.github/workflows/docker-release.yml

@@ -24,7 +24,7 @@ jobs:
         uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0
 
       - name: Setup Node.js environment
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '21'