Bump jetty9.version from 9.4.26.v20200117 to 9.4.27.v20200227 (#1547)

Bumps `jetty9.version` from 9.4.26.v20200117 to 9.4.27.v20200227.

Updates `jetty-server` from 9.4.26.v20200117 to 9.4.27.v20200227
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-9.4.26.v20200117...jetty-9.4.27.v20200227)

Updates `jetty-client` from 9.4.26.v20200117 to 9.4.27.v20200227
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-9.4.26.v20200117...jetty-9.4.27.v20200227)

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

metrics-jetty9/pom.xml

@@ -18,7 +18,7 @@
 
     <properties>
         <javaModuleName>com.codahale.metrics.jetty9</javaModuleName>
-        <jetty9.version>9.4.26.v20200117</jetty9.version>
+        <jetty9.version>9.4.27.v20200227</jetty9.version>
     </properties>
 
     <dependencyManagement>

metrics-servlets/pom.xml

@@ -18,7 +18,7 @@
 
     <properties>
         <javaModuleName>com.codahale.metrics.servlets</javaModuleName>
-        <jetty9.version>9.4.26.v20200117</jetty9.version>
+        <jetty9.version>9.4.27.v20200227</jetty9.version>
         <papertrail.profiler.version>1.1.1</papertrail.profiler.version>
         <servlet.version>3.1.0</servlet.version>
         <jackson.version>2.9.10.3</jackson.version>