Fix target build file for atomic

[Lord-Grey]

CMake file correction to ensure that builds related to atomic will not fail e.g. on an raspberry PI 1.

Credits to @Paulchen-Panther who prepared the fix.

Without the correction, builds fail with:

-- Protocol Buffers Configuring...
-- protobuf version: 32.1.0
-- Configuration script parsing status [
--   Description : Protocol Buffers
--   Version     : 32.1.0 (6.32.1)
--   Contact     : [email protected]
-- ]
-- Performing Test protobuf_HAVE_LD_VERSION_SCRIPT
-- Performing Test protobuf_HAVE_LD_VERSION_SCRIPT - Success
-- Performing Test protobuf_HAVE_BUILTIN_ATOMICS
-- Performing Test protobuf_HAVE_BUILTIN_ATOMICS - Failed
-- Could NOT find absl (missing: absl_DIR)
-- Fallback to downloading Abseil 20250512.1 from GitHub
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX17
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX17 - Success
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX20
-- Performing Test ABSL_INTERNAL_AT_LEAST_CXX20 - Failed
CMake Error at hyperion/dependencies/external/protobuf/cmake/protobuf-configure-target.cmake:11 (target_link_libraries):
  Cannot specify link libraries for target "libprotobuf" which is not built
  by this project.
Call Stack (most recent call first):
  hyperion/dependencies/external/protobuf/cmake/libprotobuf-lite.cmake:28 (protobuf_configure_target)
  hyperion/dependencies/external/protobuf/CMakeLists.txt:278 (include)

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