Edit changelog and add 2.6.3 release notes.

Author: jxblum

spring-session-data-geode/src/main/resources/changelog.txt

@@ -4,6 +4,20 @@ https://github.com/spring-projects/spring-session-data-geode
 ============================================================
 
 
+Changes in version 2.6.3 (2022-12-05)
+-------------------------------------
+Aligns Spring Session for Apache Geode (SSDG) with Spring Session (core) 2.6.3.
+
+* Upgrades to Spring Framework 5.3.24.
+* Upgrades to Spring Boot 2.6.14.
+* Upgrades to Spring Data BOM 2021.1.10 (Q-SR10).
+* Upgrades to Spring Data Commons 2.6.10.
+* Upgrades to Spring Data for Apache Geode 2.6.10.
+* Upgrades to Spring Security 5.6.9.
+* Upgrades to Spring Test for Apache Geode 0.2.4-Q.
+* Upgrades to Gradle 6.9.3.
+
+
 Changes in version 2.6.2 (2022-09-23)
 -------------------------------------
 Aligns Spring Session for Apache Geode (SSDG) with Spring Session (core) 2.6.3.