[llvm] [LLVM][Maintainers] Update NVPTX maintainers (PR #115973)

[Justin Fargnoli via llvm-commits]

https://github.com/justinfargnoli created https://github.com/llvm/llvm-project/pull/115973

This PR requires approval from:
- @jholewinski to attest that @Artem-B, @AlexMaclean, and @justinfargnoli can perform the [responsibilities of a maintainer](https://llvm.org/docs/DeveloperPolicy.html#maintainers). 
- @Artem-B and @AlexMaclean to ensure they'd like to volunteer for the role.

>From a0fd301643f62e73f2edb9e4a1dda5ed74007ecb Mon Sep 17 00:00:00 2001
From: Justin Fargnoli <justinfargnoli at gmail.com>
Date: Tue, 12 Nov 2024 17:19:51 -0800
Subject: [PATCH] [LLVM][Maintainers] Update NVPTX maintainers

This PR requires approval from:
- @jholewinski to attest that @Artem-B, @AlexMaclean, and @justinfargnoli can perform the [responsibilities of a maintainer](https://llvm.org/docs/DeveloperPolicy.html#maintainers).
- @Artem-B and @AlexMaclean to ensure they'd like to volunteer for the role.
---
 llvm/Maintainers.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/Maintainers.md b/llvm/Maintainers.md
index cb215fb8b2d99f..cb1b87031f3639 100644
--- a/llvm/Maintainers.md
+++ b/llvm/Maintainers.md
@@ -208,6 +208,12 @@ anton at korobeynikov.info (email), [asl](https://github.com/asl) (GitHub)
 
 Justin Holewinski \
 jholewinski at nvidia.com (email), [jholewinski](https://github.com/jholewinski) (GitHub)
+Artem Belevich \
+tra at google.com (email), [Artem-B](https://github.com/Artem-B) (GitHub)
+Alex MacLean \
+amaclean at nvidia.com (email), [AlexMaclean](https://github.com/AlexMaclean) (GitHub)
+Justin Fargnoli \
+jfargnoli at nvidia.com (email), [justinfargnoli](https://github.com/justinfargnoli) (GitHub)
 
 #### PowerPC backend