fix(bashScript): download shellcheck to support arm64 processor
fix(bashScript): download shellcheck to support arm64 processor

build_helper.sh just downloads shellcheck for x86_64 architecture by hard coding the verison and arch of zip file. Fortunately shellcheck starts to support arm64 since version 0.7.0, as a result update the version and add checking for architecture to support arm64.

Signed-off-by: maaaace <bef7075947fe7129869b6fdbae44ffd0ce037713@huawei.com>

spring-cloud/spring-cloud-build,spring-cloud/spring-cloud-build