Bump com.github.jnr:jnr-ffi from 2.2.14 to 2.2.15 (#661)

Bumps [com.github.jnr:jnr-ffi](https://github.com/jnr/jnr-ffi) from 2.2.14 to 2.2.15.
- [Commits](jnr/jnr-ffi@jnr-ffi-2.2.14...jnr-ffi-2.2.15)

---
updated-dependencies:
- dependency-name: com.github.jnr:jnr-ffi
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

planetiler-core/pom.xml

@@ -42,7 +42,7 @@
     <dependency>
       <groupId>com.github.jnr</groupId>
       <artifactId>jnr-ffi</artifactId>
-      <version>2.2.14</version>
+      <version>2.2.15</version>
     </dependency>
     <dependency>
       <groupId>org.locationtech.jts</groupId>