ICU 78.1 automatic update not working

https://github.com/nodejs/node/actions/runs/18965781990/job/54162008742

```
Comparing 78.1 with 77.1
Comparing checksums: deposited '' with '9d1ead73e678fa2f51a70a933b0bf017'
Skipped because checksums do not match.
```