Bump httpclient from 4.5.4 to 4.5.12 in /core

Bumps httpclient from 4.5.4 to 4.5.12.

Signed-off-by: dependabot[bot] <support@github.com>
Change-Id: I84da6a8ec466729f07e1427b6711e29c29d4e18d
diff --git a/core/pom.xml b/core/pom.xml
index 064ea88..20dd23d 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -460,7 +460,7 @@
 		<dependency>
 			<groupId>org.apache.httpcomponents</groupId>
 			<artifactId>httpclient</artifactId>
-			<version>4.5.4</version>
+			<version>4.5.12</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-io</groupId>