Upgrade version of upload and download artifact

V3 was deprecated in Nov 2024

Author: AlexanderWells-diamond

.github/actions/install_requirements/action.yml

@@ -36,7 +36,7 @@ runs:
       shell: bash
 
     - name: Upload lockfiles
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: lockfiles
         path: lockfiles
@@ -55,4 +55,3 @@ runs:
           fi
         fi
       shell: bash
-

.github/workflows/code.yml

@@ -86,9 +86,9 @@ jobs:
           CIBW_SKIP: pp* *i686*
 
       - name: Upload sdist and wheels as artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: dist
+          name: dist-${{ matrix.os }}-${{ matrix.python }}
           path: dist
 
       - name: Check for packaging errors
@@ -104,7 +104,11 @@ jobs:
       HAS_PYPI_TOKEN: ${{ secrets.PYPI_TOKEN != '' }}
 
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
+        with:
+            pattern: dist*
+            path: dist
+            merge-multiple: true
 
       - name: Fixup blank lockfiles
         # Github release artifacts can't be blank