Support writing the outputs into files

[Goooler]

Now GH CLI supports releasing like

gh release create --title ${{ github.ref_name }} --notes-file release_notes.txt

It would be great if we could generate an output file for GH to use, I know we can do it like

echo "${{ steps.extract-release-notes.outputs.release_notes }}" > release_notes.txt

but some case have to be covered in #349.

[Goooler]

Seems this is optional, I miss-used the output with double quotations, it should be:

echo '${{ steps.extract-release-notes.outputs.release_notes }}' > release_notes.txt

here for writing the note file.

[ffurrer2]

Hi @Goooler, have you tried the release_notes_file parameter? With this parameter it should be possible to write the release notes to a file.

[Goooler]

Ooops, I missed that, it works for me now.

Thanks!