CI: (deps): Bump actions/download-artifact from 7 to 8

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7 to 8.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v7...v8)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -70,7 +70,7 @@ jobs:
 
     steps:
     - name: Download doc build
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
       with:
         name: Linux-3.14-docs
         path: ./docs/build/html

.github/workflows/nightly-builds.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Download logs
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           path: /tmp/workspace/logs
 

.github/workflows/release.yml

@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Download packages
-      uses: actions/download-artifact@v7
+      uses: actions/download-artifact@v8
 
     - name: Consolidate packages for upload
       run: |

.github/workflows/tests-conda.yml

@@ -68,7 +68,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Download coverage artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
 
       - name: Upload coverage
         uses: codecov/codecov-action@v5

.github/workflows/tests-pypi.yml

@@ -98,7 +98,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Download coverage artifacts
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
 
       - name: Upload coverage
         uses: codecov/codecov-action@v5