remove mac os from bazel build

Author: Sebastian Bergt

.github/workflows/build_bazel.yml

@@ -20,13 +20,11 @@ jobs:
       fail-fast: true
       matrix:
         os: [ ubuntu-latest,
-              macos-latest,
               ubuntu-20.04,
               ubuntu-22.04,
-              ubuntu-24.04,
-              macos-13,
+              ubuntu-24.04
             ]
-            # ubuntu-18.04 does not work due to compile error on asio
+            # ubuntu-18.04 & mac-os do not work due to compile error on asio
             # windows-2019 not included to spare free minutes
     steps:
     - uses: actions/checkout@v4
@@ -39,9 +37,6 @@ jobs:
               sudo apt-get update && \
               sudo apt-get install -yq \
                 g++ clang
-         elif [ "$RUNNER_OS" == "macOS" ]; then
-              curl --tlsv1.2 --proto =https -Lo bazel https://github.com/bazelbuild/bazelisk/releases/download/v1.25.0/bazelisk-darwin-amd64
-              chmod +x bazel
          else
               echo "$RUNNER_OS not supported"
               exit 1