Bump actions/download-artifact

Bumps the github_actions group with 1 update in the /.github/workflows directory: [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/download-artifact` from 3 to 4
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

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

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

.github/workflows/test-library.yml

@@ -403,7 +403,7 @@ jobs:
       shell: bash
     - name: Download all the dists
       if: matrix.toxenv == 'metadata-validation'
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -523,7 +523,7 @@ jobs:
         ref: ${{ github.event.inputs.release-commitish }}
 
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -568,7 +568,7 @@ jobs:
       with:
         ref: ${{ github.event.inputs.release-commitish }}
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -765,7 +765,7 @@ jobs:
       with:
         ref: ${{ github.event.inputs.release-commitish }}
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -847,7 +847,7 @@ jobs:
       with:
         ref: ${{ github.event.inputs.release-commitish }}
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -927,7 +927,7 @@ jobs:
       with:
         ref: ${{ github.event.inputs.release-commitish }}
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -1010,7 +1010,7 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -1039,7 +1039,7 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
@@ -1098,7 +1098,7 @@ jobs:
 
     steps:
     - name: Download all the dists
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: python-package-distributions
         path: dist/