Bump cortex-m size test (pytorch#14950)

regressed 70 bytes after
pytorch#14570

Author: lucylq

.github/workflows/trunk.yml

@@ -346,7 +346,7 @@ jobs:
         elif [[ ${{ matrix.os}} == "zephyr-preset" ]]; then
           setup_script_args="--target-toolchain zephyr"
           toolchain_prefix=arm-zephyr-eabi-
-          threshold="135168" # 132 KiB
+          threshold="135240" # 132 KiB
           toolchain_cmake=examples/zephyr/x86_64-linux-arm-zephyr-eabi-gcc.cmake
         else
           echo "Fail unsupport OS selection ${{ matrix.os }}"