Document dependency bumps

Author: garydgregory

RELEASE_NOTES.txt

@@ -19,6 +19,11 @@ Change Log
 * Bump testcontainers.version from 1.20.2 to 1.20.4 #505
   Contributed by Gary Gregory <ggregory at apache.org>
 
+* Bump testcontainers.version from 1.21.1 to 1.21.2 #530 
+  Contributed by Gary Gregory <ggregory at apache.org>
+
+* Bump log4j.version from 2.24.3 to 2.25.0 #529 
+  Contributed by Gary Gregory <ggregory at apache.org>
 
 Release 5.3
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