Merge bitcoin/bitcoin#27362: test: remove GetRNGState lsan suppression

71b3e9b sanitizers: remove GetRNGState lsan suppression (fanquake)

Pull request description:

  I am no-longer seeing this, testing with the native_asan job over `x86_64` (Ubuntu 22.04) and `aarch64` (Fedora 37).

  Can anyone recreate the false-positive?

ACKs for top commit:
  MarcoFalke:
    lgtm ACK 71b3e9b
  hebasto:
    ACK 71b3e9b, tested on Ubuntu 22.04 x86_64.

Tree-SHA512: 63020327d61acd6c94c6c278c9c4d72aedc10253fa172bcf9353bcad4c28d068bee824969eb3ce92152244831df8fe92cffae536453c8073a4fda74dfdfbcefa

Author: fanquake

test/sanitizer_suppressions/lsan

@@ -1,5 +1,2 @@
 # Suppress warnings triggered in dependencies
 leak:libQt5Widgets
-
-# false-positive due to use of secure_allocator<>
-leak:GetRNGState