Bump actions/download-artifact from 4 to 5

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -877,7 +877,7 @@ jobs:
       - name: Clear previous coverage report
         run: rm -rf main/cov
       - name: Download HTML report
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: coverage-report
           path: main/cov

.github/workflows/docs.yaml

@@ -59,12 +59,12 @@ jobs:
       - name: Clear previous docs
         run: rm -rf main/{doc,int}
       - name: Download public docs
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: public-docs
           path: main/doc
       - name: Download internal docs
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: internal-docs
           path: main/int