Bump actions/upload-artifact from 3 to 4

.github/workflows/pypi.yml

@@ -30,12 +30,13 @@ jobs:
       - name: Build SDist
         run: pipx run build --sdist
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
+          name: sdist
           path: dist/*.tar.gz
 
   build_wheels:
-    name: Build ${{ matrix.python-version }} wheels on ${{ matrix.platform }}
+    name: Build wheels for ${{ matrix.platform }}
     runs-on: ${{ matrix.platform }}
     strategy:
       matrix:
@@ -51,19 +52,27 @@ jobs:
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.19.2
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
+          name: wheels-${{ matrix.platform }}
           path: ./wheelhouse/*.whl
 
   check_dist:
     name: Check dist
     needs: [make_sdist,build_wheels]
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
-          name: artifact
+          name: sdist
           path: dist
+
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: wheels-*
+          path: dist
+          merge-multiple: true
+
       - name: Check SDist
         run: |
           mkdir -p test-sdist
@@ -83,12 +92,18 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'release' && github.event.action == 'published'
     steps:
-    - uses: actions/download-artifact@v3
-      with:
-        name: artifact
-        path: dist
+      - uses: actions/download-artifact@v4
+        with:
+          name: sdist
+          path: dist
 
-    - uses: pypa/gh-action-pypi-publish@v1.9.0
-      with:
-        user: __token__
-        password: ${{ secrets.pypi_password }}
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: wheels-*
+          path: dist
+          merge-multiple: true
+
+      - uses: pypa/gh-action-pypi-publish@v1.9.0
+        with:
+          user: __token__
+          password: ${{ secrets.pypi_password }}

.github/workflows/test.yml

@@ -187,9 +187,9 @@ jobs:
           FLOAT32: ${{ matrix.float32 }}
 
       - name: Upload coverage file
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: coverage
+          name: coverage-${{ steps.matrix-id.outputs.id }}
           path: coverage/coverage-${{ steps.matrix-id.outputs.id }}.xml
 
   benchmarks:
@@ -273,10 +273,11 @@ jobs:
           python -m pip install -U coverage>=5.1 coveralls
 
       - name: Download coverage file
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: coverage
+          pattern: coverage-*
           path: coverage
+          merge-multiple: true
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4