Gradle: Bump com.samskivert:jmustache from 1.15 to 1.16

Bumps [com.samskivert:jmustache](https://github.com/samskivert/jmustache) from 1.15 to 1.16.
- [Commits](samskivert/jmustache@jmustache-1.15...jmustache-1.16)

---
updated-dependencies:
- dependency-name: com.samskivert:jmustache
  dependency-version: '1.16'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -28,7 +28,7 @@ buildscript {
     // Due to bug OpenAPITools/openapi-generator#20375 when we use another
     // plugin that also depends on jmustache the newer version ends up being
     // used and it breaks the generation of the python client.
-    resolutionStrategy.force("com.samskivert:jmustache:1.15")
+    resolutionStrategy.force("com.samskivert:jmustache:1.16")
   }
 }