build(deps): bump actions/setup-node from 6 to 7

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 6 to 7.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         node: [22, 24]
     steps:
       - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v7
         with:
           node-version: ${{ matrix.node }}
           cache: npm

package.json

@@ -35,7 +35,7 @@
     "eslint": "^10.8.0",
     "typescript": "^5.9.2",
     "typescript-eslint": "^8.38.0",
-    "vitest": "^4.1.10"
+    "vitest": "^3.2.4"
   },
   "engines": { "node": ">=22.19" }
 }