build(deps): bump org.apache.httpcomponents.client5:httpclient5

Bumps [org.apache.httpcomponents.client5:httpclient5](https://github.com/apache/httpcomponents-client) from 5.5.1 to 5.6.
- [Changelog](https://github.com/apache/httpcomponents-client/blob/master/RELEASE_NOTES.txt)
- [Commits](https://github.com/apache/httpcomponents-client/compare/rel/v5.5.1...rel/v5.6)

---
updated-dependencies:
- dependency-name: org.apache.httpcomponents.client5:httpclient5
  dependency-version: '5.6'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

platform/build.gradle

@@ -66,7 +66,7 @@ dependencies {
         api("com.fasterxml.jackson.datatype:jackson-datatype-jdk8:$jacksonVersion")
 
         // http5 client
-        api("org.apache.httpcomponents.client5:httpclient5:5.5.1")
+        api("org.apache.httpcomponents.client5:httpclient5:5.6")
         api("org.apache.httpcomponents.core5:httpcore5:5.3.6")
         api("org.apache.httpcomponents.core5:httpcore5-h2:5.3.6")