docs: Update docs deployment workflow actions (#382)

Because GitHub has updated the default node version
and our deployment workflow fails

this commit will:
- update the workflow with the latest version of actions
- set the node version used to latest long term support version

**Certification**
- [X] I certify that <!-- Check the box to certify: [X] -->
- I have read the [contributing guidelines](
  https://github.com/nodepa/seedling/blob/main/.github/CONTRIBUTING.md)
- I license these contributions to the public under Seedling's
  [LICENSE](https://github.com/nodepa/seedling/blob/main/LICENSE.md)
  and have the rights to do so.

Signed-off-by: toshify <4579559+toshify@users.noreply.github.com>

.github/workflows/docs.yml

@@ -17,20 +17,20 @@ jobs:
 
     steps:
       - name: Fetch repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           # fetch all commits to get last updated time or other git log info
           fetch-depth: 0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
           # choose node.js version to use
-          node-version: '14'
+          node-version: 'lts/*'
 
       # cache node_modules
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: npm-cache
         with:
           path: ~/.npm