Bump upload/download-artifact to v6 (Node 24)

Author: arkkln

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
           CIBW_ARCHS: ${{ matrix.cibw_archs }}
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-${{ matrix.os }}-${{ matrix.cibw_archs }}
           path: ./wheelhouse/*.whl
@@ -58,7 +58,7 @@ jobs:
         run: python -m build --sdist
 
       - name: Upload sdist
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: sdist
           path: dist/*.tar.gz
@@ -69,7 +69,7 @@ jobs:
     needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v5
+      - uses: actions/download-artifact@v6
         with:
           path: dist
           merge-multiple: true

.github/workflows/publish.yml

@@ -41,7 +41,7 @@ jobs:
           CIBW_ARCHS: ${{ matrix.cibw_archs }}
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: wheels-${{ matrix.os }}-${{ matrix.cibw_archs }}
           path: ./wheelhouse/*.whl
@@ -67,7 +67,7 @@ jobs:
         run: python -m build --sdist
 
       - name: Upload sdist
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: sdist
           path: dist/*.tar.gz
@@ -87,7 +87,7 @@ jobs:
 
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           path: dist
           merge-multiple: true