Disable lsan for now

The leak sanitizer causes on average 3-4 tests
to segfault during a testsuite run. Disable it
for now to see if we can get a successful
testsuite run with asan alone.

.gitlab-ci/run-tests.sh

@@ -9,6 +9,8 @@ backend=$2
 
 # Ignore memory leaks lower in dependencies
 export LSAN_OPTIONS=suppressions=$srcdir/lsan.supp
+# Disable lsan for now since it is crashy
+export ASAN_OPTION=detect_leaks=0
 
 case "${backend}" in
   x11)