Add usage of toolchain so it can be releaed with Java 11

Author: vietj

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
         with:
           ref: ${{ inputs.branch }}
       - name: Install JDK
-        uses: actions/setup-java@v2
+        uses: actions/setup-java@v5
         with:
           java-version: ${{ inputs.jdk }}
           distribution: temurin

pom.xml

@@ -71,6 +71,7 @@
   </modules>
 
   <profiles>
+
     <profile>
       <id>Java25</id>
       <activation>
@@ -82,6 +83,41 @@
         <module>vertx-core-jackson-v3</module>
       </modules>
     </profile>
+
+    <!--
+      This profile can be activated when a toolchain is required, the main use case is building
+      with Java 25 features with any JDK.
+    -->
+    <profile>
+      <id>toolchains</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-toolchains-plugin</artifactId>
+            <version>3.2.0</version>
+            <executions>
+              <execution>
+                <goals>
+                  <goal>toolchain</goal>
+                </goals>
+              </execution>
+            </executions>
+            <configuration>
+              <toolchains>
+                <jdk>
+                  <version>11</version>
+                </jdk>
+                <jdk>
+                  <version>25</version>
+                </jdk>
+              </toolchains>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+
   </profiles>
 
 </project>

vertx-core-jackson-v3/pom.xml

@@ -27,6 +27,7 @@
 
   <properties>
     <maven.compiler.release>25</maven.compiler.release>
+    <maven.install.skip>true</maven.install.skip>
   </properties>
 
   <dependencies>
@@ -72,6 +73,13 @@
   <build>
     <pluginManagement>
       <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-jar-plugin</artifactId>
+          <configuration>
+            <skip>true</skip>
+          </configuration>
+        </plugin>
       </plugins>
     </pluginManagement>
     <plugins>