gitian: make linux qt intermediate deterministic

A qt installation date snuck into the host utils (lrelease etc)
This doesn't affect the end product, so no dependency version bump.

It also doesn't explain why gavin's and mine build is different
doc: Update hash in release process for new windows deps intermediate

This was forgotten in 25d4911.
Merge pull request #4270

1411a51 doc: Update hash in release process for new windows deps intermediate (Wladimir J. van der Laan)
386e732 gitian: make linux qt intermediate deterministic (Wladimir J. van der Laan)