AppVeyor CI: Tailor config for release-8_0

Use libatomic_ops-7.6.x.

diff --git a/appveyor.yml b/appveyor.yml
index 6c4100661ef02c23b83230b41353032c6d1b1ede..93ba459503955a7a70388e7fbe7b0396e1f6b460 100644 (file)
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,7 +3,7 @@ version: 8.0.0-{build}
 clone_depth: 50
 
 build_script:
-  - git clone --depth=50 https://github.com/ivmai/libatomic_ops.git
+  - git clone --depth=50 https://github.com/ivmai/libatomic_ops.git -b release-7_6
   - cmake -Denable_gc_assertions=ON
   - cmake --build . --config Debug