Merge bitcoin/bitcoin#33601: doc: archive release notes for v30.0

8d6e491 doc: archive release notes for v30.0 (fanquake)

Pull request description:

  Archive v30.0 release notes.

ACKs for top commit:
  janb84:
    ACK 8d6e491
  willcl-ark:
    ACK 8d6e491

Tree-SHA512: 322daee16e8d46808c3b669d9c893172eccefe5dafcd79646c9d265360bd606df7be1222a6c12c16517dec88ae1fee6d1aaa7e71761cc5d7fdc8b5e0bdc82292

Author: fanquake