Bump the maven group with 3 updates

Bumps the maven group with 3 updates: [org.springframework:spring-context](https://github.com/spring-projects/spring-framework), org.eclipse.jetty:jetty-server and org.eclipse.jetty:jetty-http.


Updates `org.springframework:spring-context` from 6.1.13 to 6.1.14
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.1.13...v6.1.14)

Updates `org.eclipse.jetty:jetty-server` from 9.4.54.v20240208 to 9.4.55.v20240627

Updates `org.eclipse.jetty:jetty-http` from 9.4.54.v20240208 to 9.4.55.v20240627

---
updated-dependencies:
- dependency-name: org.springframework:spring-context
  dependency-type: direct:production
  dependency-group: maven
- dependency-name: org.eclipse.jetty:jetty-server
  dependency-type: direct:production
  dependency-group: maven
- dependency-name: org.eclipse.jetty:jetty-http
  dependency-type: direct:production
  dependency-group: maven
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -19,7 +19,7 @@
     <properties>
         <!--=== GENERAL / DSPACE-API DEPENDENCIES ===-->
         <java.version>17</java.version>
-        <spring.version>6.1.13</spring.version>
+        <spring.version>6.1.14</spring.version>
         <spring-boot.version>3.3.4</spring-boot.version>
         <spring-security.version>6.3.3</spring-security.version> <!-- sync with version used by spring-boot-->
         <hibernate.version>6.4.8.Final</hibernate.version>
@@ -38,7 +38,7 @@
         <jaxb-runtime.version>4.0.5</jaxb-runtime.version>
         <jcache-version>1.1.1</jcache-version>
         <!-- NOTE: Jetty needed for Solr, Handle Server & tests -->
-        <jetty.version>9.4.54.v20240208</jetty.version>
+        <jetty.version>9.4.55.v20240627</jetty.version>
         <log4j.version>2.23.1</log4j.version>
         <pdfbox-version>2.0.31</pdfbox-version>
         <rome.version>1.19.0</rome.version>