Merge bitcoin/bitcoin#22584: test: Add temporary sanitizer suppression implicit-signed-integer-truncation:netaddress.cpp

fa865287e5 test: Add temporary sanitizer suppression implicit-signed-integer-truncation:netaddress.cpp (MarcoFalke)

Pull request description:

  This is required to unbreak the fuzzers while a fix is being worked on.

  https://cirrus-ci.com/task/4787303177519104?logs=ci#L3020

  ```
  netaddress.cpp:1190:18: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'uint8_t' (aka 'unsigned char') changed the value to 255 (8-bit, unsigned)

ACKs for top commit:
  practicalswift:
    cr ACK fa865287e5
  tryphe:
    untested ACK fa865287e5
  lsilva01:
    ACK fa865287e5

Tree-SHA512: 4a54ec68c014c7a4c9ab268c3a04321db5eb9b2857646b41406d8d4908a3d349848b4549e80aea6afd9a0c3639522a48fe578527139519b12439eae9f0c4c46c

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