fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHETOMCATEMBED-6435948
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHETOMCATEMBED-6435950

pom.xml

@@ -16,7 +16,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
-        <spring-boot.version>2.7.16</spring-boot.version>
+        <spring-boot.version>3.1.9</spring-boot.version>
         <commons-beanutils.version>1.9.4</commons-beanutils.version>
         <commons-io.version>2.11.0</commons-io.version>
         <httpclient.version>4.5.13</httpclient.version>
@@ -326,8 +326,8 @@
                 <artifactId>properties-maven-plugin</artifactId>
                 <version>1.0.0</version>
                 <configuration>
-                    <outputFile />
-                    <properties />
+                    <outputFile/>
+                    <properties/>
                     <files>
                         <file>${ext.prop.dir}/application.properties</file>
                     </files>