[3.13] gh-145098: Use `macos-15-intel` instead of unstable `macos-26-intel` (GH-14803...

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 96d41bb7218269a49afe4922c24bda40b8db8ffd..9e57c79ff36b81206b6f4890bc9df77dac3508a7 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -246,16 +246,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # macos-26 is Apple Silicon, macos-26-intel is Intel.
-        # macos-26-intel only runs tests against the GIL-enabled CPython.
+        # macos-26 is Apple Silicon, macos-15-intel is Intel.
+        # macos-15-intel only runs tests against the GIL-enabled CPython.
         os:
         - macos-26
-        - macos-26-intel
+        - macos-15-intel
         free-threading:
         - false
         - true
         exclude:
-        - os: macos-26-intel
+        - os: macos-15-intel
           free-threading: true
     uses: ./.github/workflows/reusable-macos.yml
     with: