update java restemplate dependencies to newer versions (#21368) #1193

Job	Run time
Build Java Client JDK11 (samples/client/echo_api/java/resttemplate)	1m 21s
Build Java Client JDK11 (samples/client/echo_api/java/apache-httpclient)	1m 15s
Build Java Client JDK11 (samples/client/echo_api/java/feign-gson)	1m 4s
Build Java Client JDK11 (samples/client/echo_api/java/native)	1m 11s
Build Java Client JDK11 (samples/client/echo_api/java/resteasy)	1m 3s
	5m 54s

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