ci: disable address sanitizer for now

On my own machine inside podman, SANITIZE=ON leads to 100% cpu and
hanging unit tests. On a different computer it works fine.

GitHub actions used to work fine too until one of these days it
started to exhibit the same sympton - hangs forever and times out.

This happens also when re-running CI on old commits that previously
passed CI, so it's not a regression in the code.

I can't figure out what the cause of this is, but we a
reliable/passing CI, so we disable this check until we know how to fix
it.

Author: benma

.ci/ci

@@ -20,7 +20,7 @@ make prepare-tidy
 ./.ci/check-tidy
 
 # Build and run Unit tests
-make -j8 unit-test
+make -j8 unit-test SANITIZE=OFF
 make -j8 run-unit-tests
 make -j8 run-rust-unit-tests
 make -j8 run-valgrind-on-unit-tests