fix(java): bump maven from 3.9.12 to 3.9.14

Apache Maven only serves the latest release from dlcdn.apache.org,
so 3.9.12 now returns a 404.

Author: matifali

images/java/ubuntu.Dockerfile

@@ -10,8 +10,8 @@ ENV JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
 ENV PATH=$PATH:$JAVA_HOME/bin
 
 # Install Maven
-ARG MAVEN_VERSION=3.9.12
-ARG MAVEN_SHA512=0a1be79f02466533fc1a80abbef8796e4f737c46c6574ede5658b110899942a94db634477dfd3745501c80aef9aac0d4f841d38574373f7e2d24cce89d694f70
+ARG MAVEN_VERSION=3.9.14
+ARG MAVEN_SHA512=d50af8ab5e6005b46a07f0ce9d3719e67cfdf898da988a84871304cd59fb1af0fef2f99dea709e6e66f21f732f905979b5c2dce6b6860406f60a70e84d9cf0b8
 
 ENV MAVEN_HOME=/usr/share/maven
 ENV MAVEN_CONFIG="/home/coder/.m2"