Update httpclient and httpcore

Saw the following error in some logs:

    Sep 10, 2020 3:19:25 PM com.amazonaws.http.apache.utils.ApacheUtils noSuchMethodThrownByNormalizeUriInvoker
    WARNING: NoSuchMethodException was thrown when disabling normalizeUri. This indicates you are using an old version (< 4.5.8) of Apache http client. It is recommended to use http client version >= 4.5.9 to avoid the breaking change introduced in apache client 4.5.7 and the latency in exception handling. See aws/aws-sdk-java#1919 for more information

gradle/version.properties

@@ -47,8 +47,8 @@ jna=4.2.2
 randomizedrunner=2.7.7
 junit5=5.6.0
 junit=4.12
-httpclient=4.5.2
-httpcore=4.4.5
+httpclient=4.5.12
+httpcore=4.4.12
 commonslogging=1.1.3
 commonscodec=1.10
 hamcrest=2.1