chore(deps): 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]

.github/workflows/check-modules-compare.yaml

@@ -51,7 +51,7 @@ jobs:
 
       - name: Upload comparison artifacts
         if: always()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: compare-harness-${{ steps.prepare.outputs.run-id }}
           path: .pipeline-runs/compare/${{ steps.prepare.outputs.run-id }}

.github/workflows/container-build.yaml

@@ -96,7 +96,7 @@ jobs:
           rm -rf build-output
       - name: Upload pipeline data for validation
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: website-data
           path: website/data/skipped_modules.json
@@ -135,7 +135,7 @@ jobs:
 
       - name: Upload skipped modules report (if validation failed)
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: skipped-modules-report
           path: website/data/skipped_modules.json