chore(deps): Bump actions/upload-artifact from 3 to 4

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

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/python.yml

@@ -49,7 +49,7 @@ jobs:
 #          python -c "import pywr"
 #          python -m pytest
 #      - name: Upload wheels
-#        uses: actions/upload-artifact@v3
+#        uses: actions/upload-artifact@v4
 #        with:
 #          name: wheels
 #          path: dist
@@ -80,7 +80,7 @@ jobs:
           python -c "import pywr"
           python -m pytest
       - name: Upload wheels
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: dist
@@ -111,7 +111,7 @@ jobs:
           python -c "import pywr"
           python -m pytest
       - name: Upload wheels
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: wheels
           path: dist
@@ -147,7 +147,7 @@ jobs:
 #            pip3 install crfs --no-index --find-links dist/ --force-reinstall
 #            python3 -c "import crfs"
 #      - name: Upload wheels
-#        uses: actions/upload-artifact@v3
+#        uses: actions/upload-artifact@v4
 #        with:
 #          name: wheels
 #          path: dist
@@ -183,7 +183,7 @@ jobs:
 #            pip3 install crfs --no-index --find-links /io/dist/ --force-reinstall
 #            python3 -c "import crfs"
 #      - name: Upload wheels
-#        uses: actions/upload-artifact@v3
+#        uses: actions/upload-artifact@v4
 #        with:
 #          name: wheels
 #          path: dist
@@ -221,7 +221,7 @@ jobs:
 #            pip3 install crfs --no-index --find-links dist/ --force-reinstall
 #            python3 -c "import crfs"
 #      - name: Upload wheels
-#        uses: actions/upload-artifact@v3
+#        uses: actions/upload-artifact@v4
 #        with:
 #          name: wheels
 #          path: dist