[llvm] [LLVM] Volunteer myself and Usman Nadeem as DFAJumpThreading maintainers (PR #161491)

[Hongyu Chen via llvm-commits]

================
@@ -123,6 +123,13 @@ a.bataev at outlook.com (email), [alexey-bataev](https://github.com/alexey-bataev)
 Chandler Carruth \
 chandlerc at gmail.com, chandlerc at google.com (email), [chandlerc](https://github.com/chandlerc) (GitHub)
 
+#### DFAJumpThreading
+
+Hongyu Chen \
+xxs\_chy at outlook.com (email), [XChy](https://github.com/XChy) (Github) \
+Usman Nadeem \
----------------
XChy wrote:

@UsmanNadeem, let me know if you want to update information here, thanks.

https://github.com/llvm/llvm-project/pull/161491