Bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -37,7 +37,7 @@ jobs:
           python setup.py build
           cat build/lib/monai/_version.py
       - name: Upload version
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: _version.py
           path: build/lib/monai/_version.py

.github/workflows/release.yml

@@ -66,7 +66,7 @@ jobs:
 
     - if: matrix.python-version == '3.9' && startsWith(github.ref, 'refs/tags/')
       name: Upload artifacts
-      uses: actions/upload-artifact@v6
+      uses: actions/upload-artifact@v7
       with:
         name: dist
         path: dist/
@@ -109,7 +109,7 @@ jobs:
           python setup.py build
           cat build/lib/monai/_version.py
       - name: Upload version
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: _version.py
           path: build/lib/monai/_version.py