chore(deps): update maven plugins

pom.xml

@@ -23,7 +23,7 @@
     <parent>
         <groupId>io.gravitee</groupId>
         <artifactId>gravitee-parent</artifactId>
-        <version>20.0</version>
+        <version>21.0.0</version>
     </parent>
 
     <groupId>io.gravitee.policy</groupId>
@@ -41,11 +41,16 @@
         <gravitee-plugin-api.version>1.10.0</gravitee-plugin-api.version>
         <gravitee-node-api.version>1.23.0</gravitee-node-api.version>
 
-        <maven-assembly-plugin.version>2.5.5</maven-assembly-plugin.version>
         <freemarker.version>2.3.31</freemarker.version>
         <guava.version>30.1.1-jre</guava.version>
 
         <mockito.version>3.5.13</mockito.version>
+
+        <maven-plugin-assembly.version>3.5.0</maven-plugin-assembly.version>
+        <maven-plugin-prettier.version>0.19</maven-plugin-prettier.version>
+        <maven-plugin-prettier.prettierjava.version>2.0.0</maven-plugin-prettier.prettierjava.version>
+        <maven-plugin-properties.version>1.1.0</maven-plugin-properties.version>
+
         <!-- Property used by the publication job in CI-->
         <publish-folder-path>graviteeio-apim/plugins/policies</publish-folder-path>
     </properties>
@@ -154,7 +159,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>properties-maven-plugin</artifactId>
-                <version>1.0.0</version>
+                <version>${maven-plugin-properties.version}</version>
                 <executions>
                     <execution>
                         <phase>initialize</phase>
@@ -172,8 +177,9 @@
                 </executions>
             </plugin>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
-                <version>${maven-assembly-plugin.version}</version>
+                <version>${maven-plugin-assembly.version}</version>
                 <configuration>
                     <appendAssemblyId>false</appendAssemblyId>
                     <descriptors>
@@ -193,10 +199,9 @@
             <plugin>
                 <groupId>com.hubspot.maven.plugins</groupId>
                 <artifactId>prettier-maven-plugin</artifactId>
-                <version>0.17</version>
+                <version>${maven-plugin-prettier.version}</version>
                 <configuration>
-                    <nodeVersion>12.13.0</nodeVersion>
-                    <prettierJavaVersion>1.6.1</prettierJavaVersion>
+                    <prettierJavaVersion>${maven-plugin-prettier.prettierjava.version}</prettierJavaVersion>
                 </configuration>
                 <executions>
                     <execution>
@@ -209,5 +214,4 @@
             </plugin>
         </plugins>
     </build>
-
 </project>