Merge bitcoin#30729: build: fix version number post CMake

680f05e build: fix version number post CMake (fanquake)

Pull request description:

  CMake was merged after branching-off for `28.x`.

ACKs for top commit:
  hebasto:
    ACK 680f05e
  TheCharlatan:
    ACK 680f05e
  vasild:
    ACK 680f05e

Tree-SHA512: 18e10a49830b529f54f7c9ed81ff0489f9aac9779f34935ebe0051c742f3b7862ca5d3409a6d6347c2d9c6439dcdd1394333278308012fed473f5b00d80afdd5

CMakeLists.txt

@@ -23,7 +23,7 @@ endif()
 # Project / Package metadata
 #=============================
 set(PACKAGE_NAME "Bitcoin Core")
-set(CLIENT_VERSION_MAJOR 27)
+set(CLIENT_VERSION_MAJOR 28)
 set(CLIENT_VERSION_MINOR 99)
 set(CLIENT_VERSION_BUILD 0)
 set(CLIENT_VERSION_RC 0)