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/pypi.yml

@@ -187,12 +187,12 @@ jobs:
     needs: [check_changes, make_sdist, build_wheels]
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           name: sdist
           path: dist
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           pattern: wheels-*
           path: dist
@@ -224,18 +224,18 @@ jobs:
     # Don't publish from forks
     if: github.repository_owner == 'pymc-devs' && github.event_name == 'release' && github.event.action == 'published'
     steps:
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           name: sdist
           path: dist
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           pattern: wheels-*
           path: dist
           merge-multiple: true
 
-      - uses: actions/download-artifact@v4
+      - uses: actions/download-artifact@v5
         with:
           name: universal_wheel
           path: dist

.github/workflows/test.yml

@@ -336,7 +336,7 @@ jobs:
           python -m pip install -U coverage>=5.1 coveralls
 
       - name: Download coverage file
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           pattern: coverage-*
           path: coverage