refactor: Operate on bytes instead of bits in Asmap code

Co-authored-by: Hodlinator <172445034+hodlinator@users.noreply.github.com>

test/functional/feature_asmap.py

@@ -18,7 +18,7 @@ from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
 
 ASMAP = 'src/test/data/asmap.raw' # path to unit test skeleton asmap
-VERSION = 'fec61fa21a9f46f3b17bdcd660d7f4cd90b966aad3aec593c99b35f0aca15853'
+VERSION = '6dfbc157b8a97b6e9fc7fc08d4e43d30247bbf62055eaa1098f46db9885855e3'
 
 def expected_messages(filename):
     return [f'Opened asmap file "{filename}" (59 bytes) from disk',