Bump httpclient from 4.5.9 to 4.5.13 in /plugins/de.cognicrypt.core

Bumps httpclient from 4.5.9 to 4.5.13.

---
updated-dependencies:
- dependency-name: org.apache.httpcomponents:httpclient
  dependency-type: direct:production
...

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

Author: dependabot[bot]

plugins/de.cognicrypt.core/pom.xml

@@ -66,7 +66,7 @@
 		<dependency>
 			<groupId>org.apache.httpcomponents</groupId>
 			<artifactId>httpclient</artifactId>
-			<version>4.5.9</version>
+			<version>4.5.13</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-logging</groupId>