[LLVM] Update maintainers for binary utilities (#120428)

We currently list jakehehrlich as the maintainer for llvm-objcopy /
ObjCopy, but he hasn't been involved with LLVM for more than 5 years.

Convert the llvm-object category into a broader binary utilities
category and add jh7370 and MaskRay as the new maintainers.

Author: nikic

llvm/Maintainers.md

@@ -357,10 +357,12 @@ [email protected] (email), [cyndyishida](https://github.com/cyndyishida) (Gi
 Andrea Di Biagio \
 [email protected], [email protected] (email), [adibiagio](https://github.com/adibiagio) (GitHub)
 
-#### llvm-objcopy and ObjCopy library
+#### Binary Utilities
 
-Jake Ehrlich \
-[email protected] (email), [jakehehrlich](https://github.com/jakehehrlich) (GitHub)
+James Henderson \
+[email protected] (email), [jh7370](https://github.com/jh7370) (GitHub) \
+Fangrui Song \
+[email protected] (email), [MaskRay](https://github.com/MaskRay) (GitHub)
 
 #### Gold plugin
 
@@ -452,6 +454,7 @@ [email protected] (email), [lattner](https://github.com/lattner) (GitHub), clattn
 Paul C. Anagnostopoulos ([email protected], [Paul-C-Anagnostopoulos](https://github.com/Paul-C-Anagnostopoulos)) -- TableGen \
 Justin Bogner ([email protected], [bogner](https://github.com/bogner)) -- SelectionDAG \
 Evan Cheng ([email protected]) -- Parts of code generator not covered by someone else \
+Jake Ehrlich ([email protected], [jakehehrlich](https://github.com/jakehehrlich)) -- llvm-objcopy and ObjCopy library \
 Renato Golin ([email protected], [rengolin](https://github.com/rengolin)) -- ARM backend \
 James Grosbach ([email protected]) -- MC layer \
 Anton Korobeynikov ([email protected], [asl](https://github.com/asl)) -- ARM EABI \