deps: Update dependency org.apache.maven.extensions:maven-build-cache-extension to v1.2.1

Author: renovate[bot]

.mvn/extensions.xml

@@ -3,7 +3,7 @@
   <extension>
     <groupId>org.apache.maven.extensions</groupId>
     <artifactId>maven-build-cache-extension</artifactId>
-    <version>1.2.0</version>
+    <version>1.2.1</version>
   </extension>
 
   <extension>