Bump scalatest.version from 3.2.17 to 3.2.18 in /jvm-packages/xgboost4j (#10196)

Bumps `scalatest.version` from 3.2.17 to 3.2.18.

Updates `org.scalatest:scalatest_2.12` from 3.2.17 to 3.2.18
- [Release notes](https://github.com/scalatest/scalatest/releases)
- [Commits](https://github.com/scalatest/scalatest/compare/release-3.2.17...release-3.2.18)

Updates `org.scalactic:scalactic_2.12` from 3.2.17 to 3.2.18
- [Release notes](https://github.com/scalatest/scalatest/releases)
- [Commits](https://github.com/scalatest/scalatest/compare/release-3.2.17...release-3.2.18)

---
updated-dependencies:
- dependency-name: org.scalatest:scalatest_2.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.scalactic:scalactic_2.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

jvm-packages/pom.xml

@@ -46,7 +46,7 @@
         <cudf.version>23.12.1</cudf.version>
         <spark.rapids.version>23.12.1</spark.rapids.version>
         <cudf.classifier>cuda12</cudf.classifier>
-        <scalatest.version>3.2.17</scalatest.version>
+        <scalatest.version>3.2.18</scalatest.version>
         <scala-collection-compat.version>2.12.0</scala-collection-compat.version>
 
         <!-- SPARK-36796 for JDK-17 test-->