bump metasploit-payloads to 1.3.8

Author: wwebb-r7

metasploit-framework.gemspec

@@ -70,7 +70,7 @@ Gem::Specification.new do |spec|
   # are needed when there's no database
   spec.add_runtime_dependency 'metasploit-model'
   # Needed for Meterpreter
-  spec.add_runtime_dependency 'metasploit-payloads', '1.3.7'
+  spec.add_runtime_dependency 'metasploit-payloads', '1.3.8'
   # Needed for the next-generation POSIX Meterpreter
   spec.add_runtime_dependency 'metasploit_payloads-mettle', '0.2.2'
   # Needed by msfgui and other rpc components