Merge bitcoin/bitcoin#29782: doc: Update the developer mailing list address.

0ead466a0c Update the developer mailing list address. (Edil Medeiros)

Pull request description:

  The developer mailing list was migrated to Google Groups in February 2024 as announced in https://groups.google.com/g/bitcoindev/c/aewBuV6k-LI.

  In this patch, I decided to add a link to the [archives maintained by the Linux Foundation](https://lists.linuxfoundation.org/pipermail/bitcoin-dev/) as linked in the [old mailing list page](https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev).

  A reasonable alternative would be link to the [new archives](https://gnusha.org/pi/bitcoindev/) linked in the [migration announcement message](https://groups.google.com/g/bitcoindev/c/aewBuV6k-LI). I'm not sure about the status of the archive migration, probably the old archives are more comprehensive to this date.

ACKs for top commit:
  josibake:
    reACK 0ead466a0c
  Sjors:
    ACK 0ead466a0c
  Zero-1729:
    crACK 0ead466a0c

Tree-SHA512: c29296a45a65f342df03faffa49e7dc1469d78e96074a7dbc82d89fc3f45179e4828015cbb6400b44830d6bb7fc23869abf2b8a7070196b03f99fbb0158bb343

doc/dnsseed-policy.md

@@ -44,7 +44,7 @@ related to the DNS seed operation.
 If these expectations cannot be satisfied the operator should
 discontinue providing services and contact the active Bitcoin
 Core development team as well as posting on
-[bitcoin-dev](https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev).
+[bitcoin-dev](https://groups.google.com/g/bitcoindev).
 
 Behavior outside of these expectations may be reasonable in some
 situations but should be discussed in public in advance.