build(deps): update actions/upload-artifact to v7 (#4)

Approved after official Arduino compilation and offline packaging passed.

Author: dependabot[bot]

.github/workflows/compile.yml

@@ -31,7 +31,7 @@ jobs:
         with:
           python-version: "3.14"
       - run: python tools/build_release.py
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: Arduino-Programs-Guide
           path: dist/*.zip