[arista]: Fix web package md5 hash not correct issue (sonic-net#6411)

Need to add the follow redirection option -L when downloading the package with redirection.

src/sonic-build-hooks/scripts/buildinfo_base.sh

@@ -46,7 +46,7 @@ check_version_control()
 get_url_version()
 {
     local package_url=$1
-    /usr/bin/curl -ks $package_url | md5sum | cut -d' ' -f1
+    /usr/bin/curl -Lks $package_url | md5sum | cut -d' ' -f1
 }
 
 check_if_url_exist()