fix: Quote CMAKE_ICONV_FLAG value in .bazelrc to handle spaces

Author: czgdp1807

.bazelrc

@@ -51,4 +51,4 @@ build:macos_arm64 --host_copt=-Wno-error=c23-extensions
 build:macos_arm64 --copt=-Wno-c23-extensions
 build:macos_arm64 --host_copt=-Wno-c23-extensions
 build:macos_arm64 --action_env=CONDA_PREFIX
-build:macos_arm64 --action_env=CMAKE_ICONV_FLAG=-DCMAKE_DISABLE_FIND_PACKAGE_Iconv=ON -DICONV_LIBRARIES=$CONDA_PREFIX/lib/libiconv.dylib -DICONV_INCLUDE_DIR=$CONDA_PREFIX/include
+build:macos_arm64 --action_env=CMAKE_ICONV_FLAG="-DCMAKE_DISABLE_FIND_PACKAGE_Iconv=ON -DICONV_LIBRARIES=$CONDA_PREFIX/lib/libiconv.dylib -DICONV_INCLUDE_DIR=$CONDA_PREFIX/include"

ci/environment-macos.yml

@@ -4,7 +4,6 @@ channels:
   - conda-forge
 dependencies:
   # Note: Bazel is installed separately via official installer (conda package is unreliable)
-  - python=3.11  # Python 3.14 has compatibility issues with ZetaSQL build tools
   - setuptools
   - wheel
   - pip