test: Add temporary sanitizer suppression implicit-signed-integer-truncation:netaddress.cpp

Author: MarcoFalke

test/sanitizer_suppressions/ubsan

@@ -89,6 +89,7 @@ implicit-signed-integer-truncation:leveldb/
 implicit-signed-integer-truncation:miner.cpp
 implicit-signed-integer-truncation:net.cpp
 implicit-signed-integer-truncation:net_processing.cpp
+implicit-signed-integer-truncation:netaddress.cpp
 implicit-signed-integer-truncation:streams.h
 implicit-signed-integer-truncation:test/arith_uint256_tests.cpp
 implicit-signed-integer-truncation:test/skiplist_tests.cpp