Add spring boot version to spring-boot-maven-plugin

Author: tijsrademakers

modules/flowable-app-rest/pom.xml

@@ -456,6 +456,7 @@
                     <plugin>
                         <groupId>org.springframework.boot</groupId>
                         <artifactId>spring-boot-maven-plugin</artifactId>
+                        <version>${spring.boot.version}</version>
                         <configuration>
                             <arguments>
                                 <argument>--spring.datasource.url=jdbc:mysql://127.0.0.1:3306/flowable?characterEncoding=UTF-8</argument>

modules/flowable-spring-boot/flowable-spring-boot-samples/flowable-spring-boot-sample-native/pom.xml

@@ -44,7 +44,7 @@
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
-
+                <version>${spring.boot.version}</version>
                 <configuration>
                     <jvmArguments>
                         -agentlib:native-image-agent=config-output-dir=target/native-image
@@ -134,6 +134,7 @@
                     <plugin>
                         <groupId>org.springframework.boot</groupId>
                         <artifactId>spring-boot-maven-plugin</artifactId>
+                        <version>${spring.boot.version}</version>
                         <executions>
                             <execution>
                                 <id>process-test-aot</id>