[llvm] Fix macOS casing in premerge workflow (PR #210477)

[Mishal Shah via llvm-commits]

https://github.com/shahmishal created https://github.com/llvm/llvm-project/pull/210477

None

>From 800131856bb760e16f307a8c37f0892c5ead2c3f Mon Sep 17 00:00:00 2001
From: Mishal Shah <mishal_shah at apple.com>
Date: Fri, 17 Jul 2026 19:36:13 -0700
Subject: [PATCH] Fix macOS casing in premerge workflow

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 2203084ae36d9..2816987c489e9 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -265,7 +265,7 @@ jobs:
   premerge-check-macos:
     name: Build and Test macOS arm64
     needs: premerge-compute-macos
-    runs-on: [self-hosted, macos, apple-runners]
+    runs-on: [self-hosted, macOS, apple-runners]
     # Skip the self-hosted runner entirely if there is nothing to build,
     # rather than tying up a runner slot for a no-op run.
     if: >-