deps: Update dependency org.apache.maven.plugins:maven-jar-plugin to v3.4.0 (#1942)

Author: renovate-bot

core/pom.xml

@@ -202,7 +202,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
-        <version>3.3.0</version>
+        <version>3.4.0</version>
         <executions>
           <execution>
             <goals>

pom.xml

@@ -357,7 +357,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
-        <version>3.3.0</version>
+        <version>3.4.0</version>
         <configuration>
           <archive>
             <manifestEntries>

r2dbc/core/pom.xml

@@ -100,7 +100,7 @@
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
-       <version>3.3.0</version>
+       <version>3.4.0</version>
        <executions>
          <execution>
            <goals>