Bump actions/download-artifact from 3 to 4 (#39)

Bumps [actions/download-artifact](https://github.com/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
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/conda-upload.yml

@@ -56,7 +56,7 @@ jobs:
 
     - name: Download built conda package from same workflow
       if: inputs.build_workflow == ''
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         path: ${{ runner.temp }}/conda_builds
 

.github/workflows/pip-build.yml

@@ -87,7 +87,7 @@ jobs:
         cache-environment: true
 
     - name: Download built package from same workflow
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: ${{ env.PACKAGENAME }}
         path: dist/
@@ -114,7 +114,7 @@ jobs:
         cache-environment: true
 
     - name: Download built package from same workflow
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: ${{ env.PACKAGENAME }}
         path: dist/

.github/workflows/pip-upload.yml

@@ -56,7 +56,7 @@ jobs:
 
     - name: Download built package from same workflow
       if: inputs.build_workflow == ''
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: ${{ env.PACKAGENAME }}
         path: dist/