Add :needs_network to brew prof tests

They need network access to download the profiler gems.

Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>

Library/Homebrew/test/dev-cmd/prof_spec.rb

@@ -6,7 +6,7 @@ require "cmd/shared_examples/args_parse"
 describe "brew prof" do
   it_behaves_like "parseable arguments"
 
-  describe "integration tests", :integration_test do
+  describe "integration tests", :integration_test, :needs_network do
     after do
       FileUtils.rm_rf HOMEBREW_LIBRARY_PATH/"prof"
     end