Update release workflow

Author: tsterbak

.github/workflows/build-release.yml

@@ -48,4 +48,4 @@ jobs:
       uses: softprops/action-gh-release@v1
       if: startsWith(github.ref, 'refs/tags/')
       with:
-        files: dist/openandroidinstaller-${{  github.ref_name }}-${{ matrix.os }}
+        files: dist/openandroidinstaller-${{  github.ref_name }}-${{ matrix.os }}.zip