Bump actions/upload-artifact from 6 to 7 (#305)

Author: dependabot[bot]

.github/workflows/conda-python-build.yaml

@@ -126,7 +126,7 @@ jobs:
           GH_TOKEN: ${{ github.token }}
       - name: Upload conda repo
         if: ${{ !cancelled() }}
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: conda-repo-${{ matrix.ARCH }}-${{ matrix.PY_VER }}
           path: "/tmp/conda-bld-output"

.github/workflows/wheels-build.yaml

@@ -136,7 +136,7 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
       - name: Upload PyPi wheels artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: pypi-wheels-${{ matrix.ARCH }}
           path: final-dist/*.whl