Bump log4j-core from 2.15.0 to 2.17.0 in /preferencesfx-demo

Bumps log4j-core from 2.15.0 to 2.17.0.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-core
  dependency-type: direct:production
...

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

preferencesfx-demo/pom.xml

@@ -71,7 +71,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.15.0</version>
+            <version>2.17.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>