chore: update mainnet chainparams and seeds

[UdjinM6]

Issue being fixed or feature implemented

What was done?

How Has This Been Tested?

Breaking Changes

n/a

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation
• I have assigned this pull request to a milestone (for repository code-owners and collaborators only)

[ogabrielides]

ACK. Synced Mainnet

[thephez]

Starting timestamp looks good. This is what my script shows for estimated times of window start times.

Start time: 2023-11-15 00:00:00
Estimated block height at starttime: 1971463
First window block height: 1971648, estimated time: 2023-11-15 08:05:37
1.  Block height: 1975680, estimated time: 2023-11-22 16:29:37
2.  Block height: 1979712, estimated time: 2023-11-30 00:53:37   (earliest possible activation)
3.  Block height: 1983744, estimated time: 2023-12-07 09:17:37
4.  Block height: 1987776, estimated time: 2023-12-14 17:41:37
5.  Block height: 1991808, estimated time: 2023-12-22 02:05:37
6.  Block height: 1995840, estimated time: 2023-12-29 10:29:37
7.  Block height: 1999872, estimated time: 2024-01-05 18:53:37
8.  Block height: 2003904, estimated time: 2024-01-13 03:17:37
9.  Block height: 2007936, estimated time: 2024-01-20 11:41:37
10. Block height: 2011968, estimated time: 2024-01-27 20:05:37

[PastaPastaPasta]

ACK; validated block information and timestamps