Merge bitcoin/bitcoin#26231: doc: bump bips.md up-to-date version to v24.0

a9d20eeceb doc: bump bips.md up-to-date version to v24.0 (Sebastian Falbesoner)

Pull request description:

  This is a trivial follow-up to #26124.

ACKs for top commit:
  jarolrod:
    ACK a9d20eeceb

Tree-SHA512: 24c17c72498f96f9122d8fb041f1f6f63bd186e25ac3cb5a661bb1993106c6632f5efd95a15d19681004d30d38eca2d2a16b383a7a1f1c3db17f887ae1fcd02a

doc/bips.md

@@ -1,4 +1,4 @@
-BIPs that are implemented by Bitcoin Core (up-to-date up to **v23.0**):
+BIPs that are implemented by Bitcoin Core (up-to-date up to **v24.0**):
 
 * [`BIP 9`](https://github.com/bitcoin/bips/blob/master/bip-0009.mediawiki): The changes allowing multiple soft-forks to be deployed in parallel have been implemented since **v0.12.1**  ([PR #7575](https://github.com/bitcoin/bitcoin/pull/7575))
 * [`BIP 11`](https://github.com/bitcoin/bips/blob/master/bip-0011.mediawiki): Multisig outputs are standard since **v0.6.0** ([PR #669](https://github.com/bitcoin/bitcoin/pull/669)).