Merge bitcoin/bitcoin#30490: depends: bump libmultiprocess for CMake fixes

d318c4e depends: bump libmultiprocess for CMake fixes (Cory Fields)

Pull request description:

  Broken out of #30454 . Bumped [even further](bitcoin/bitcoin@4883197#r1684802528) after bitcoin-core/libmultiprocess#98 was merged upstream.

  hebasto Presumably this approach works now with the CMake branch?

ACKs for top commit:
  ryanofsky:
    Code review ACK d318c4e.

Tree-SHA512: 4b5491f73c0063d09e8339829cd831b1f4c441dd7b55a22037c9337c80cce19bb00a3e5cf925efa77d6d4e89ab45482f40f5799bc14948f8cabcbad3c3549430

Author: fanquake

depends/packages/native_libmultiprocess.mk

@@ -1,8 +1,8 @@
 package=native_libmultiprocess
-$(package)_version=8da797c5f1644df1bffd84d10c1ae9836dc70d60
+$(package)_version=8b8a4766ce0a1892b9e8a5eb73dc39821005e520
 $(package)_download_path=https://github.com/chaincodelabs/libmultiprocess/archive
 $(package)_file_name=$($(package)_version).tar.gz
-$(package)_sha256_hash=030f4d393d2ac9deba98d2e1973e22fc439ffc009d5f8ae3225c90639f86beb0
+$(package)_sha256_hash=475c0dc2357a2ff30e9a164e4c16dc8a6597a57c9193d646fa9cbf0a55c45d78
 $(package)_dependencies=native_capnp
 
 define $(package)_config_cmds