fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-8186158

pom.xml

@@ -13,7 +13,7 @@
     </organization>
     <properties>
         <valinta-tulos-service.version>7.0.1-SNAPSHOT</valinta-tulos-service.version>
-        <jetty.version>9.4.15.v20190215</jetty.version>
+        <jetty.version>9.4.57.v20241219</jetty.version>
         <postgresql.version>42.2.5</postgresql.version>
         <scalatra.version>2.6.3</scalatra.version>
         <flyway-core.version>3.2.1</flyway-core.version>
@@ -446,12 +446,10 @@
                                 </filter>
                             </filters>
                             <transformers>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                     <resource>reference.conf</resource>
                                 </transformer>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <manifestEntries>
                                         <Main-Class>fi.vm.sade.omatsivut.OmatsivutServer</Main-Class>
                                     </manifestEntries>
@@ -588,11 +586,11 @@
                         <executions>
                             <execution>
                                 <id>scala-compile-first</id>
-                                <phase />
+                                <phase/>
                             </execution>
                             <execution>
                                 <id>scala-test-compile</id>
-                                <phase />
+                                <phase/>
                             </execution>
                         </executions>
                     </plugin>
@@ -602,7 +600,7 @@
                         <version>2.4.3</version>
                         <executions>
                             <execution>
-                                <phase />
+                                <phase/>
                             </execution>
                         </executions>
                     </plugin>
@@ -612,7 +610,7 @@
                         <executions>
                             <execution>
                                 <id>get-vts-var</id>
-                                <phase />
+                                <phase/>
                             </execution>
                         </executions>
                     </plugin>