Fix Maven download URLs to use reliable Apache mirror

Replace dlcdn.apache.org with downloads.apache.org for Maven downloads
in both Java and Universal images. The CDN was returning 404 errors,
while the main Apache downloads mirror is more reliable.

Co-authored-by: bpmct <[email protected]>

Author: blink-so[bot]

images/java/ubuntu.Dockerfile

@@ -18,7 +18,7 @@ ENV MAVEN_CONFIG="/home/coder/.m2"
 
 RUN mkdir -p $MAVEN_HOME $MAVEN_HOME/ref \
   && echo "Downloading maven" \
-  && curl -fsSL -o /tmp/apache-maven.tar.gz https://dlcdn.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
+  && curl -fsSL -o /tmp/apache-maven.tar.gz https://downloads.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
   && echo "Checking downloaded file hash" \
   && echo "${MAVEN_SHA512}  /tmp/apache-maven.tar.gz" | sha512sum -c - \
   && echo "Unzipping maven" \

images/universal/ubuntu.Dockerfile

@@ -33,7 +33,7 @@ RUN wget -O go.tar.gz https://go.dev/dl/go1.21.5.linux-amd64.tar.gz \
     && rm go.tar.gz
 
 # Install Maven
-RUN wget -O maven.tar.gz https://dlcdn.apache.org/maven/maven-3/3.9.10/binaries/apache-maven-3.9.10-bin.tar.gz \
+RUN wget -O maven.tar.gz https://downloads.apache.org/maven/maven-3/3.9.10/binaries/apache-maven-3.9.10-bin.tar.gz \
     && tar -C /opt -xzf maven.tar.gz \
     && mv /opt/apache-maven-3.9.10 /opt/maven \
     && rm maven.tar.gz