build: bump actions/upload-artifact from 1 to 2.3.1 (#19)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Avior <florian.bouillon@delta-wings.net>

.github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Zip artifacts
         run: zip -r assemble.zip . -i '**/build/*.apk' '**/build/*.aab' '**/build/*.aar' '**/build/*.so'
       - name: Upload artifacts
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2.3.1
         with:
           name: assemble
           path: assemble.zip