MINOR: [C++][CI] Pin CMake

lidavidm · lidavidm · commit 5c5a0db656ca · 2022-03-04T12:46:01.000-05:00
diff --git a/ci/conda_env_cpp.txt b/ci/conda_env_cpp.txt
@@ -21,7 +21,8 @@ boost-cpp>=1.68.0
 brotli
 bzip2
 c-ares
-cmake
+# Required due to the AWS SDK C++ pin
+cmake<3.22
 gflags
 glog
 gmock>=1.10.0
