add myself to codeowners (#260)

Adding myself to code-owners until Progress can figure out what is going on with access via groups for external contributors, which they nuked

Signed-off-by: Phil Dibowitz <[email protected]>

Author: jaymzh

.github/CODEOWNERS

@@ -1,5 +1,5 @@
 # Order is important. The last matching pattern has the most precedence.
 
-*                 @chef/chef-infra-reviewers @chef/chef-infra-approvers @chef/chef-infra-owners
+*                 @chef/chef-infra-reviewers @chef/chef-infra-approvers @chef/chef-infra-owners @jaymzh
 .expeditor/       @chef/infra-packages
 *.md              @chef/docs-team