fix: use GITHUB_OUTPUT file in bump step too

.gitea/workflows/release.yml

@@ -64,8 +64,8 @@ jobs:
           full = f\"{v['major']}.{v['minor']}.{patch_padded}\"
           with open('version.json', 'w') as f:
               json.dump(v, f, indent=2)
-          print(f'version={full}')
-          print(f'::set-output name=release_version::{full}')
+          with open('$GITHUB_OUTPUT', 'a') as out:
+              out.write(f'release_version={full}\n')
           print(f'Bumped to {full}')
           "