build: Update to tycho@4.0.3 and maven@3.9.3 (#798)

Signed-off-by: Sheng Chen <sheche@microsoft.com>

Author: jdneo

jdtls.ext/.mvn/wrapper/maven-wrapper.properties

@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.3/apache-maven-3.9.3-bin.zip

jdtls.ext/pom.xml

@@ -9,7 +9,7 @@
     <properties>
         <base.name>Java Project Manager</base.name>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <tycho-version>2.7.2</tycho-version>
+        <tycho-version>4.0.3</tycho-version>
         <checkstyleDir>${basedir}</checkstyleDir>
     </properties>