Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.1.7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
...

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

Author: dependabot[bot]

.github/workflows/deploy_book-en.yml

@@ -112,7 +112,7 @@ jobs:
           persist-credentials: false
 
       - name: 🔻 Download artifact containing the book
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
         with:
          # Artifact name
          name: book-en # optional

.github/workflows/deploy_book-fr.yml

@@ -112,7 +112,7 @@ jobs:
           persist-credentials: false
 
       - name: 🔻 Download artifact containing the book
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
         with:
          # Artifact name
          name: book-fr # optional

.github/workflows/deploy_pres-en.yml

@@ -97,7 +97,7 @@ jobs:
           persist-credentials: false
 
       - name: 🔻 Download artifact containing the presentation
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
         with:
          # Artifact name
          name: pres-en # optional

.github/workflows/deploy_pres-fr.yml

@@ -97,7 +97,7 @@ jobs:
           persist-credentials: false
 
       - name: 🔻 Download artifact containing the presentation
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4.1.7
         with:
          # Artifact name
          name: pres-fr # optional