Bump Producer-C to 1.6.0 (#1261)

Author: sirknightj

CMake/Dependencies/libkvscproducer-CMakeLists.txt

@@ -7,9 +7,9 @@ include(ExternalProject)
 # clone repo only
 ExternalProject_Add(libkvscproducer-download
 	GIT_REPOSITORY    https://github.com/awslabs/amazon-kinesis-video-streams-producer-c.git
-	GIT_TAG           develop
-    GIT_SHALLOW       TRUE
-    GIT_PROGRESS      TRUE
+	GIT_TAG           v1.6.0
+   	GIT_SHALLOW       TRUE
+  	GIT_PROGRESS      TRUE
 	SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/kvscproducer-src"
 	BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/kvscproducer-build"
 	CONFIGURE_COMMAND ""