Merge branch 'pl-security-harness-fix' into 'master'

Fix `scripts/security-harness` to support older git versions

See merge request gitlab-org/gitlab!72695

scripts/security-harness

@@ -4,7 +4,6 @@
 
 require 'digest'
 require 'fileutils'
-require 'open3'
 
 if ENV['NO_COLOR']
   SHELL_RED    = ''
@@ -19,7 +18,7 @@ else
 end
 
 LEFTHOOK_GLOBAL_CONFIG_PATH = File.expand_path("../lefthook.yml", __dir__)
-HOOK_PATH = Open3.capture3("git rev-parse --path-format=absolute --git-path hooks/pre-push")[0].strip
+HOOK_PATH = `git rev-parse --path-format=absolute --git-path hooks/pre-push`.split.last
 HOOK_DATA = <<~HOOK
   #!/usr/bin/env bash