Bump image version

Author: r0qs

scripts/docker/buildpack-deps/Dockerfile.ubuntu.clang.ossfuzz

@@ -22,7 +22,7 @@
 # (c) 2016-2021 solidity contributors.
 #------------------------------------------------------------------------------
 FROM gcr.io/oss-fuzz-base/base-builder AS base
-LABEL version="11"
+LABEL version="12"
 
 ARG DEBIAN_FRONTEND=noninteractive