Bump org.eclipse.jetty:jetty-client from 9.4.54.v20240208 to 12.0.15

Bumps org.eclipse.jetty:jetty-client from 9.4.54.v20240208 to 12.0.15.

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-client
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

saic-java-rest-client/pom.xml

@@ -21,7 +21,7 @@
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-client</artifactId>
-      <version>9.4.54.v20240208</version>
+      <version>12.0.15</version>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>