chore: backend: add pom.xml formatting using spotless

Signed-off-by: Christoph Heiss <christoph@c8h4.io>

backend/pom.xml

@@ -1,9 +1,5 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<project
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xmlns="http://maven.apache.org/POM/4.0.0"
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
->
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>at.beerbrawl</groupId>
@@ -19,12 +15,6 @@
         <kotlin.language.version>2.0</kotlin.language.version>
         <kotlin.code.style>official</kotlin.code.style>
         <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
-        <maven-enforcer-plugin.version>3.5.0</maven-enforcer-plugin.version>
-        <maven-surefire-plugin.version>3.3.0</maven-surefire-plugin.version>
-        <maven.compiler.plugin>3.13.0</maven.compiler.plugin>
-        <maven.compiler.source>${java.version}</maven.compiler.source>
-        <maven.compiler.target>${java.version}</maven.compiler.target>
-        <maven.minimum-version>3.6.3</maven.minimum-version>
         <git-commit-id-plugin.version>4.9.10</git-commit-id-plugin.version>
         <h2.version>2.2.224</h2.version>
         <jacoco.version>0.8.12</jacoco.version>
@@ -33,6 +23,12 @@
         <jpamodelgen.version>6.5.2.Final</jpamodelgen.version>
         <lombok.version>1.18.34</lombok.version>
         <mapstruct.version>1.5.5.Final</mapstruct.version>
+        <maven-enforcer-plugin.version>3.5.0</maven-enforcer-plugin.version>
+        <maven-surefire-plugin.version>3.3.0</maven-surefire-plugin.version>
+        <maven.compiler.plugin>3.13.0</maven.compiler.plugin>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <maven.minimum-version>3.6.3</maven.minimum-version>
         <spotless.version>2.43.0</spotless.version>
         <spotless.prettier.version>3.3.2</spotless.prettier.version>
         <spotless.prettier-plugin-java.version>2.6.0</spotless.prettier-plugin-java.version>
@@ -48,8 +44,8 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <type>pom</type>
                 <version>${spring.boot.version}</version>
+                <type>pom</type>
                 <scope>import</scope>
             </dependency>
         </dependencies>
@@ -326,13 +322,6 @@
                 <groupId>com.google.cloud.tools</groupId>
                 <artifactId>jib-maven-plugin</artifactId>
                 <version>${jib-maven-plugin.version}</version>
-                <dependencies>
-                    <dependency>
-                        <groupId>com.github.luben</groupId>
-                        <artifactId>zstd-jni</artifactId>
-                        <version>${zstd-jni.version}</version>
-                    </dependency>
-                </dependencies>
 
                 <configuration>
                     <from>
@@ -350,11 +339,24 @@
                         </jvmFlags>
                     </container>
                 </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>com.github.luben</groupId>
+                        <artifactId>zstd-jni</artifactId>
+                        <version>${zstd-jni.version}</version>
+                    </dependency>
+                </dependencies>
             </plugin>
             <plugin>
                 <groupId>pl.project13.maven</groupId>
                 <artifactId>git-commit-id-plugin</artifactId>
                 <version>${git-commit-id-plugin.version}</version>
+                <configuration>
+                    <useNativeGit>true</useNativeGit>
+                    <generateGitPropertiesFile>true</generateGitPropertiesFile>
+                    <generateGitPropertiesFilename>${project.build.outputDirectory}/git.properties</generateGitPropertiesFilename>
+                    <verbose>true</verbose>
+                </configuration>
                 <executions>
                     <execution>
                         <id>get-the-git-infos</id>
@@ -363,14 +365,6 @@
                         </goals>
                     </execution>
                 </executions>
-                <configuration>
-                    <useNativeGit>true</useNativeGit>
-                    <generateGitPropertiesFile>true</generateGitPropertiesFile>
-                    <generateGitPropertiesFilename>
-                        ${project.build.outputDirectory}/git.properties
-                    </generateGitPropertiesFilename>
-                    <verbose>true</verbose>
-                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.jacoco</groupId>
@@ -447,6 +441,11 @@
                             <file>.license-header</file>
                         </licenseHeader>
                     </kotlin>
+                    <pom>
+                        <sortPom>
+                            <nrOfIndentSpace>4</nrOfIndentSpace>
+                        </sortPom>
+                    </pom>
                     <yaml>
                         <includes>
                             <include>.diktat-analysis.yaml</include>