ci: remove deprecated warnings

Node.js 12 actions are deprecated.
Uprage to updated GitHub action.

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

.github/workflows/CodeSpell.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       # See: https://github.com/codespell-project/actions-codespell/blob/master/README.md
       - name: Spell check

.github/workflows/publish-docs.yml

@@ -9,7 +9,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: DenverCoder1/doxygen-github-pages-action@v1.1.0
+      - uses: DenverCoder1/doxygen-github-pages-action@v1.3.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           folder: api-docs/html