Update tlsfuzzer to get Python interpreter detection

Tlsfuzzer also assumed the Python interpreter would be called
"python", this update is necessary to get a fixed version (see
https://github.com/tomato42/tlsfuzzer/pull/671).

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>

diff --git a/tests/suite/tls-fuzzer/tlsfuzzer b/tests/suite/tls-fuzzer/tlsfuzzer
index 477b22683238fc540f512dd0c09963fa467ddef4..54a1350ae9fa1981062679acb2966e697140c3d1 160000 (submodule)
--- a/tests/suite/tls-fuzzer/tlsfuzzer
+++ b/tests/suite/tls-fuzzer/tlsfuzzer
@@ -1 +1 @@
-Subproject commit 477b22683238fc540f512dd0c09963fa467ddef4
+Subproject commit 54a1350ae9fa1981062679acb2966e697140c3d1