Bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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]

action.yml

@@ -204,7 +204,7 @@ runs:
         LOG_LEVEL: ${{ inputs.log-level }}
         EXTRA_ARGS: ${{ inputs.options }}
     - name: Upload Copilot Artifacts
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       if: ${{ always() && inputs.upload-artifact == 'true' }}
       with:
         name: copilot-logs-${{ github.run_id }}-${{ github.run_attempt }}