chore(deps): bump org.openjdk.nashorn:nashorn-core from 15.4 to 15.5

Bumps [org.openjdk.nashorn:nashorn-core](https://github.com/openjdk/nashorn) from 15.4 to 15.5.
- [Changelog](https://github.com/openjdk/nashorn/blob/main/CHANGELOG.md)
- [Commits](openjdk/nashorn@release-15.4...release-15.5)

---
updated-dependencies:
- dependency-name: org.openjdk.nashorn:nashorn-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

plugin-script-nashorn/build.gradle

@@ -15,7 +15,7 @@ jar {
 dependencies {
     implementation project(':plugin-script')
 
-    implementation group: 'org.openjdk.nashorn', name: 'nashorn-core', version: '15.4'
+    implementation group: 'org.openjdk.nashorn', name: 'nashorn-core', version: '15.5'
 
     testImplementation project(':plugin-script').sourceSets.test.output
 }