Chore(deps): Bump dev.langchain4j:langchain4j-bom in /versions (#14112)

Bumps [dev.langchain4j:langchain4j-bom](https://github.com/langchain4j/langchain4j) from 1.4.0 to 1.7.1.
- [Release notes](https://github.com/langchain4j/langchain4j/releases)
- [Commits](langchain4j/langchain4j@1.4.0...1.7.1)

---
updated-dependencies:
- dependency-name: dev.langchain4j:langchain4j-bom
  dependency-version: 1.7.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

versions/build.gradle.kts

@@ -12,7 +12,7 @@ val pdfbox = "3.0.5"
 
 dependencies {
     api(platform("ai.djl:bom:0.34.0"))
-    api(platform("dev.langchain4j:langchain4j-bom:1.4.0"))
+    api(platform("dev.langchain4j:langchain4j-bom:1.7.1"))
     api("dev.langchain4j:langchain4j")
     api("dev.langchain4j:langchain4j-google-ai-gemini")
     api("dev.langchain4j:langchain4j-hugging-face")