Bump jetty.version from 9.4.39.v20210325 to 9.4.40.v20210413

Bumps `jetty.version` from 9.4.39.v20210325 to 9.4.40.v20210413.

Updates `jetty-server` from 9.4.39.v20210325 to 9.4.40.v20210413
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.39.v20210325...jetty-9.4.40.v20210413)

Updates `jetty-webapp` from 9.4.39.v20210325 to 9.4.40.v20210413
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.39.v20210325...jetty-9.4.40.v20210413)

Updates `jetty-maven-plugin` from 9.4.39.v20210325 to 9.4.40.v20210413
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.39.v20210325...jetty-9.4.40.v20210413)

Updates `jetty-jspc-maven-plugin` from 9.4.39.v20210325 to 9.4.40.v20210413
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.39.v20210325...jetty-9.4.40.v20210413)

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 5985a84..0f3950c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -512,7 +512,7 @@
         <httpmime.version>4.5.13</httpmime.version>
         <intellij.version>5.0</intellij.version>
         <jaxbri.version>2.3.4</jaxbri.version>
-        <jetty.version>9.4.39.v20210325</jetty.version>
+        <jetty.version>9.4.40.v20210413</jetty.version>
         <jibx.version>1.3.3</jibx.version>
         <log4j2.version>2.14.1</log4j2.version>
         <maven.archiver.version>3.5.1</maven.archiver.version>