ci: move the workflows to the current action majors (#87)

The three workflows were several majors behind on every action, and nothing
raises them on its own: the repository has no Dependabot or Renovate
configuration. Bump them together so `docs.yml` does not sit on versions the
other two have left:

- actions/checkout v4 -> v7 (all three workflows)
- actions/setup-node v4 -> v7 (all three workflows)
- actions/configure-pages v5 -> v6 (docs.yml)
- actions/upload-pages-artifact v3 -> v5 (docs.yml)
- actions/deploy-pages v4 -> v5 (docs.yml)
- codecov/codecov-action v5 -> v7 (node.js.yml)

Every input used here still exists at the target major, read from each
action.yml: checkout keeps `fetch-depth`, setup-node keeps `node-version` and
`cache`, upload-pages-artifact keeps `path`, configure-pages, deploy-pages and
codecov-action keep `token` and the rest of their interface.

Author: soimy

.github/workflows/docs.yml

@@ -57,10 +57,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Use Node.js 24
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: 24
           cache: "npm"
@@ -72,10 +72,10 @@ jobs:
       - run: npm run docs:build
 
       - name: Configure Pages
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@v6
 
       - name: Upload the site
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v5
         with:
           path: docs/.vitepress/dist
 
@@ -94,4 +94,4 @@ jobs:
     steps:
       - name: Deploy
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5

.github/workflows/node.js.yml

@@ -21,12 +21,12 @@ jobs:
 
     steps:
     - name: Checkout 
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
       with:
         fetch-depth: 2
 
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'npm'
@@ -46,7 +46,7 @@ jobs:
     # tarball produced by npm pack
     - run: npm run verify:package
     - name: Upload coverage reports to Codecov
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v7
       if: matrix.node-version == '24.x'
       with:
         token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/release.yml

@@ -12,10 +12,10 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
 
     - name: Setup Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v7
       with:
         node-version: '22'
         cache: 'npm'