Update actions/setup-node action to v7

Author: renovate[bot]

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           path: docs
       - uses: actions/setup-go@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v7
         with:
           node-version: 24.x
           cache: yarn

.github/workflows/deploy.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           ref: ${{ inputs.branch || 'main' }}
-      - uses: actions/setup-node@v6
+      - uses: actions/setup-node@v7
         with:
           node-version: latest
           cache: yarn