Upgrade maven to last version supporting JDK 6

reftel · reftel · commit 735afea4abf8 · 2022-06-08T12:57:01.000+02:00
Versions before 3.2.3 don't use https when accessing Maven Central,
which is now required (see MNG-5672).
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.1.1/apache-maven-3.1.1-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.2.5/apache-maven-3.2.5-bin.zip

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.1.1/apache-maven-3.1.1-bin.zip`
	`1`	`+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.2.5/apache-maven-3.2.5-bin.zip`