Bump httpclient from 4.2.5 to 4.3.6 in /02_springboot_controller#2

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dependabot/maven/02_springboot_controller/org.apache.httpcomponents-httpclient-4.3.6bookbut/com_springboot_samples:dependabot/maven/02_springboot_controller/org.apache.httpcomponents-httpclient-4.3.6Copy head branch name to clipboard