Bump jetty.version from 9.4.41.v20210516 to 9.4.42.v20210604 in /core

Bumps `jetty.version` from 9.4.41.v20210516 to 9.4.42.v20210604.

Updates `jetty-server` from 9.4.41.v20210516 to 9.4.42.v20210604
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.41.v20210516...jetty-9.4.42.v20210604)

Updates `jetty-servlet` from 9.4.41.v20210516 to 9.4.42.v20210604
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.41.v20210516...jetty-9.4.42.v20210604)

Updates `jetty-webapp` from 9.4.41.v20210516 to 9.4.42.v20210604
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.41.v20210516...jetty-9.4.42.v20210604)

Change-Id: I7d59591d49022e98a3ae8635fa42fd3f65874e9f

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-server
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty:jetty-servlet
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty:jetty-webapp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Closes #202

Change-Id: I12484d53754a5ac0295a1e1201af0efbff6cd2c4
diff --git a/core/pom.xml b/core/pom.xml
index e41f11c..e34bd90 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -10,7 +10,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<spring.version>5.3.7</spring.version>
 		<jersey.version>1.19.4</jersey.version>
-		<jetty.version>9.4.41.v20210516</jetty.version>
+		<jetty.version>9.4.42.v20210604</jetty.version>
 		<hibernate.version>5.4.29.Final</hibernate.version>
 		<flyway.version>7.9.2</flyway.version>
 		<log4j.version>2.14.1</log4j.version>