Bump actions/upload-artifact from 4 to 5 (#15)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -49,7 +49,7 @@ jobs:
           tar -czf dart-${{ inputs.ref }}-${{ matrix.host-arch }}.tar.gz dart-sdk
 
       - name: Upload Artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: dart-${{ inputs.ref }}-${{ matrix.host-arch }}
           path: dart-${{ inputs.ref }}-${{ matrix.host-arch }}.tar.gz
@@ -132,7 +132,7 @@ jobs:
             gen_snapshot_android_${{ matrix.target-arch }}_*
 
       - name: Upload Artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: dartsdk-android-${{ matrix.target-arch }}-${{ inputs.ref }}
           path: |