Upgrade the build to Maven 3.8.7

Closes gh-1381

.mvn/wrapper/maven-wrapper.properties

@@ -1,2 +1,18 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+# Licensed to the Apache Software Foundation (ASF) under one
-wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar

initializr-parent/pom.xml

@@ -18,7 +18,7 @@
 		<commons-compress.version>1.21</commons-compress.version>
 		<commons-text.version>1.10.0</commons-text.version>
 		<maven-resolver.version>1.7.3</maven-resolver.version>
-		<maven-resolver-provider.version>3.8.6</maven-resolver-provider.version>
+		<maven-resolver-provider.version>3.8.7</maven-resolver-provider.version>
 		<spring-boot.version>3.0.0</spring-boot.version>
 		<spring-cloud-contract.version>4.0.0-RC1</spring-cloud-contract.version>
 	</properties>