Chore(deps): Bump dev.langchain4j:langchain4j-bom in /versions

Bumps [dev.langchain4j:langchain4j-bom](https://github.com/langchain4j/langchain4j) from 1.12.2 to 1.13.0.
- [Release notes](https://github.com/langchain4j/langchain4j/releases)
- [Commits](langchain4j/langchain4j@1.12.2...1.13.0)

---
updated-dependencies:
- dependency-name: dev.langchain4j:langchain4j-bom
  dependency-version: 1.13.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

versions/build.gradle.kts

@@ -20,7 +20,7 @@ val pdfbox = "3.0.7"
 
 dependencies {
     api(platform("ai.djl:bom:0.36.0"))
-    api(platform("dev.langchain4j:langchain4j-bom:1.12.2"))
+    api(platform("dev.langchain4j:langchain4j-bom:1.13.0"))
     api(enforcedPlatform("io.zonky.test.postgres:embedded-postgres-binaries-bom:18.3.0"))
     api(platform("org.junit:junit-bom:6.0.3"))
     api(platform("org.glassfish.grizzly:grizzly-bom:5.0.0"))