Upgrade to AspectJ 1.9.21

Bumps [org.aspectj:aspectjweaver](https://github.com/eclipse/org.aspectj) from 1.9.20.1 to 1.9.21.
- [Release notes](https://github.com/eclipse/org.aspectj/releases)
- [Commits](https://github.com/eclipse/org.aspectj/commits)

Author: dependabot[bot]

build.gradle

@@ -53,7 +53,7 @@ ext {
 
     apacheSshdVersion = '2.11.0'
     artemisVersion = '2.31.2'
-    aspectjVersion = '1.9.20.1'
+    aspectjVersion = '1.9.21'
     assertjVersion = '3.24.2'
     assertkVersion = '0.28.0'
     avroVersion = '1.11.3'