Update README for patch release 23.05.1

Partially Resolves: COMPMID-6328
Signed-off-by: ramy.elgammal@arm.com <ramy.elgammal@arm.com>
Change-Id: I1dd460857da973e65e80326ab7c92b47ba1937eb
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9853
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/docs/user_guide/release_version_and_change_log.dox b/docs/user_guide/release_version_and_change_log.dox
index fefeaa3..e323545 100644
--- a/docs/user_guide/release_version_and_change_log.dox
+++ b/docs/user_guide/release_version_and_change_log.dox
@@ -48,6 +48,12 @@
    - Add new OpenCL™ kernels:
      - @ref opencl::kernels::ClMatMulNativeMMULKernel support for FP32 and FP16, with batch support
 
+v23.05.1 Public patch release
+ - Enable CMake and Bazel option to build multi_isa without FP16 support.
+ - Fix compilation error in NEReorderLayer (aarch64 only).
+ - Disable invalid (false-negative) validation test with CPU scale layer on FP16.
+ - Various bug fixes
+
 v23.05 Public major release
  - New features:
    - Add new Arm® Neon™ kernels / functions: