Babblesim: Update to v1.1.2

A fix for a backchannels error, which is currently being
seen at random in Zephyr CI in 1 test.
Piggybacking some compile warnings fixes with newer gcc versions.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

Dockerfile.ci

@@ -8,7 +8,7 @@ ARG DOXYGEN_VERSION=1.9.4
 ARG CMAKE_VERSION=3.20.5
 ARG RENODE_VERSION=1.13.2
 ARG LLVM_VERSION=15
-ARG BSIM_VERSION=v1.1.1
+ARG BSIM_VERSION=v1.1.2
 ARG SPARSE_VERSION=9212270048c3bd23f56c20a83d4f89b870b2b26e
 ARG PROTOC_VERSION=21.7
 ARG WGET_ARGS="-q --show-progress --progress=bar:force:noscroll --no-check-certificate"