Add Patrick as a maintainer

Patrick wrote https://github.com/fortra/function-pythonic, and is
interested in helping us maintain the SDK.

Signed-off-by: Nic Cope <nicc@rk0n.org>

Author: negz

OWNERS.md

@@ -13,6 +13,7 @@ repository maintainers in their own `OWNERS.md` file.
 ## Maintainers
 * Nic Cope <negz@upbound.com> ([negz](https://github.com/negz))
 * Bob Haddleton <bob.haddleton@nokia.com> ([bobh66](https://github.com/bobh66))
+* Patrick J. McNerthney <pat@mcnerthney.com> ([iciclespider](https://github.com/iciclespider))
 
 
 See [CODEOWNERS](./CODEOWNERS) for automatic PR assignment.