chore(deps): bump org.apache.httpcomponents.client5:httpclient5 (#367)

Bumps [org.apache.httpcomponents.client5:httpclient5](https://github.com/apache/httpcomponents-client) from 5.4.4 to 5.6.
- [Changelog](https://github.com/apache/httpcomponents-client/blob/master/RELEASE_NOTES.txt)
- [Commits](apache/httpcomponents-client@rel/v5.4.4...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
...

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Author: dependabot[bot]

apps/backend/pom.xml

@@ -155,7 +155,7 @@
 		<dependency>
 			<groupId>org.apache.httpcomponents.client5</groupId>
 			<artifactId>httpclient5</artifactId>
-			<version>5.4.4</version>
+			<version>5.6</version>
 		</dependency>
 		<!-- Spring Boot Mail Starter (includes Jakarta Mail) -->
 		<dependency>