[Backend] Update RKNN Runtime libs to version "1.5.1b19" (#2156)

* update rknpu2 runtime libs and rknntoolkit2

* update rknpu2 runtime libs

Author: Zheng-Bicheng

cmake/rknpu2.cmake

@@ -1,7 +1,7 @@
 # get RKNPU2_URL
 set(RKNPU2_URL_BASE "https://bj.bcebos.com/fastdeploy/third_libs/")
-set(RKNPU2_VERSION "1.4.2b0")
-set(RKNPU2_FILE "rknpu2_runtime-linux-aarch64-${RKNPU2_VERSION}-${RKNN2_TARGET_SOC}.tgz")
+set(RKNPU2_VERSION "1.5.1b19")
+set(RKNPU2_FILE "rknpu2_runtime-linux-aarch64-${RKNPU2_VERSION}-${RKNN2_TARGET_SOC}.tar.gz")
 set(RKNPU2_URL "${RKNPU2_URL_BASE}${RKNPU2_FILE}")
 
 # download_and_decompress

docs/cn/build_and_install/rknpu2.md

@@ -45,8 +45,8 @@ sudo apt-get install libxslt1-dev zlib1g zlib1g-dev libglib2.0-0 libsm6 libgl1-m
 pip install numpy==1.16.6
 
 # 安装rknn_toolkit2-1.3.0_11912b58-cp38-cp38-linux_x86_64.whl
-wget https://bj.bcebos.com/fastdeploy/third_libs/rknn_toolkit2-1.4.2b3+0bdd72ff-cp36-cp36m-linux_x86_64.whl
-pip install rknn_toolkit2-1.4.2b3+0bdd72ff-cp36-cp36m-linux_x86_64.whl
+wget https://bj.bcebos.com/fastdeploy/third_libs/rknn_toolkit2-1.5.1b19+4c81851a-cp36-cp36m-linux_x86_64.whl
+pip install rknn_toolkit2-1.5.1b19+4c81851a-cp36-cp36m-linux_x86_64.whl
 ```
 
 ## 编译安装FastDeploy C++ SDK