Change pkgcheck to use macos-11 runner

* macos-latest runner doesn't have XCode 11.7.0 anymore, newer XCode versions have incompatible toolchain

diff --git a/.github/workflows/pkgcheck.yml b/.github/workflows/pkgcheck.yml
index 3b8c712c220af8b24a8c67fa0c51077e66620c35..180c2433baaf59b6c3def7356606e3b942eab709 100644 (file)
--- a/.github/workflows/pkgcheck.yml
+++ b/.github/workflows/pkgcheck.yml
@@ -56,19 +56,19 @@ jobs:
             packages: qemu gcc-powerpc64le-linux-gnu g++-powerpc64le-linux-gnu libc6-dev-ppc64el-cross
 
           - name: macOS Clang
-            os: macOS-latest
+            os: macOS-11
             compiler: clang
             cxx-compiler: clang++
 
           - name: macOS Clang Native
-            os: macOS-latest
+            os: macOS-11
             compiler: clang
             cxx-compiler: clang++
             cmake-args: -DWITH_NATIVE_INSTRUCTIONS=ON
             configure-args: --native
 
           - name: macOS Clang Symbol Prefix
-            os: macOS-latest
+            os: macOS-11
             compiler: clang
             cxx-compiler: clang++
             cmake-args: -DZLIB_SYMBOL_PREFIX=zTest_