fix: add changelog entry

Author: ppkarwasz

src/changelog/.2.x.x/3800_graalvm-misc-reflection.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns="https://logging.apache.org/xml/ns"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="
+           https://logging.apache.org/xml/ns
+           https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="fixed">
+  <issue id="3800" link="https://github.com/apache/logging-log4j2/pull/3800"/>
+  <description format="asciidoc">
+    Resolves `PropertiesConfiguration` compatibility issues with GraalVM and addresses additional minor reflection-related problems.
+  </description>
+</entry>