Timestamp difference between Ubuntu 20 and Ubuntu 24 in Pixie data

[zonca]

there must be some different rounding in timestamps, need to track down where it is coming from.

the diff (just first 20 lines):

101c101
<                         "channel_headerA__Ztimestamp_full": 1310740
---
>                         "channel_headerA__Ztimestamp_full": 1310747
143c143
<                         "channel_headerA__Ztimestamp_full": 85852160
---
>                         "channel_headerA__Ztimestamp_full": 85852189
185c185
<                         "channel_headerA__Ztimestamp_full": -1436418048
---
>                         "channel_headerA__Ztimestamp_full": -1436418047
227c227
<                         "channel_headerA__Ztimestamp_full": 4194304
---
>                         "channel_headerA__Ztimestamp_full": 4194336
269c269
<                         "channel_headerA__Ztimestamp_full": 85852160
---
>                         "channel_headerA__Ztimestamp_full": 85852189

Full log:
https://gist.github.com/zonca/c4cc2535883163d9984f59bc3fbd3979

It would be useful to compare to the Github actions log