chore(deps): update actions/upload-artifact action to v7

Author: renovate[bot]

.github/workflows/build.yml

@@ -38,7 +38,7 @@ jobs:
         run: task build
 
       - name: Upload build artifacts
-        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7
         with:
           name: minder-mcp
           path: bin/minder-mcp