Update 1.15 inference

Author: saimidu

src/sagemaker/image_uri_config/tensorflow.json

@@ -232,7 +232,7 @@
             "1.12": "1.12.0",
             "1.13": "1.13.0",
             "1.14": "1.14.0",
-            "1.15": "1.15.4",
+            "1.15": "1.15.5",
             "1.4": "1.4.1",
             "1.5": "1.5.0",
             "1.6": "1.6.0",