try installing cmake 3

Author: blink1073

.github/workflows/test-python.yml

@@ -60,6 +60,10 @@ jobs:
         with:
           mongodb-version: 4.4
           mongodb-replica-set: test-rs
+      - name: Install CMake 3 on MacOS
+        if: ${{ startsWith(runner.os, 'macOS') }}
+        run: |
+          brew install cmake@3
       - name: Start MongoDB on MacOS
         if: ${{ startsWith(runner.os, 'macOS') }}
         run: |

bindings/python/build-libbson.sh

@@ -3,9 +3,6 @@
 set -o xtrace
 set -o errexit
 
-cmake --version
-exit 1
-
 # Version of libbson to build
 # Keep in sync with pymongoarrow.version._MIN_LIBBSON_VERSION
 LIBBSON_VERSION=${LIBBSON_VERSION:-"1.23.1"}