Merge pull request nightscout#179 from bjornoleh/upload-artifact_v4

build_trio.yml: use actions/upload-artifact@v4

Author: MikePlante1

.github/workflows/build_trio.yml

@@ -262,7 +262,7 @@ jobs:
       # Upload Build artifacts
       - name: Upload build log, IPA and Symbol artifacts
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: build-artifacts
           path: |