build: harcoded macOS sdk version

Author: hugomano

.github/workflows/build.yaml

@@ -74,14 +74,14 @@ jobs:
             platform: linux-amd64
             bazel_target: //xla/pjrt/c:pjrt_c_api_gpu_plugin
           - target: cpu
-            config: "--config=release_macos_arm64"
+            config: "--config=release_macos_arm64 --macos_sdk_version=15.2"
             artifact: bazel-bin/xla/pjrt/c/libpjrt_c_api_cpu_plugin.dylib
             runs_on: ["self-hosted", "macOS"]
             renamed_artifact: libpjrt_cpu.dylib
             platform: darwin-arm64
             bazel_target: //xla/pjrt/c:pjrt_c_api_cpu_plugin
           - target: cpu
-            config: "--config=release_macos_base"
+            config: "--config=release_macos_base --macos_sdk_version=15.2"
             artifact: bazel-bin/xla/pjrt/c/libpjrt_c_api_cpu_plugin.dylib
             renamed_artifact: libpjrt_cpu.dylib
             runs_on: ["self-hosted", "macOS"]

openxla/bazelrc/cpu.bazelrc

@@ -4,4 +4,3 @@ build                    --strip=always
 build:linux              --incompatible_enable_cc_toolchain_resolution
 build:linux              --repo_env BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
 build:linux              --sandbox_add_mount_pair=/tmp
-build:release_macos_base --macos_minimum_os=10.15