Bump it.unimi.dsi:fastutil from 8.5.14 to 8.5.15

Bumps [it.unimi.dsi:fastutil](https://github.com/vigna/fastutil) from 8.5.14 to 8.5.15.
- [Changelog](https://github.com/vigna/fastutil/blob/master/CHANGES)
- [Commits](vigna/fastutil@8.5.14...8.5.15)

---
updated-dependencies:
- dependency-name: it.unimi.dsi:fastutil
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -16,7 +16,7 @@
     <maven.compiler.source>17</maven.compiler.source>
     <maven.compiler.target>17</maven.compiler.target>
     <maven.compiler.release>17</maven.compiler.release>
-    <versions.fastutil>8.5.14</versions.fastutil>
+    <versions.fastutil>8.5.15</versions.fastutil>
   </properties>
 
   <profiles>