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-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -118,7 +118,7 @@
       <dependency>
         <groupId>com.samskivert</groupId>
         <artifactId>jmustache</artifactId>
-        <version>1.15</version>
+        <version>1.16</version>
       </dependency>
       <dependency>
         <groupId>org.junit.jupiter</groupId>