Bump jetty-server from 9.4.8.v20171121 to 9.4.38.v20210224

Bumps [jetty-server](https://github.com/eclipse/jetty.project) from 9.4.8.v20171121 to 9.4.38.v20210224.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](https://github.com/eclipse/jetty.project/compare/jetty-9.4.8.v20171121...jetty-9.4.38.v20210224)

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

services/git-bridge/pom.xml

@@ -82,7 +82,7 @@
         <dependency>
             <groupId>org.eclipse.jetty</groupId>
             <artifactId>jetty-server</artifactId>
-            <version>9.4.8.v20171121</version>
+            <version>9.4.38.v20210224</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
         <dependency>