chore: bump langchain4j embeddings and mongodb atlas dependencies to 1.18.0-beta28

Author: otaviojava

pom.xml

@@ -44,12 +44,12 @@
         <dependency>
             <groupId>dev.langchain4j</groupId>
             <artifactId>langchain4j-embeddings-all-minilm-l6-v2</artifactId>
-            <version>1.16.0-beta26</version>
+            <version>1.18.0-beta28</version>
         </dependency>
         <dependency>
             <groupId>dev.langchain4j</groupId>
             <artifactId>langchain4j-mongodb-atlas</artifactId>
-            <version>1.15.1-beta25</version>
+            <version>1.18.0-beta28</version>
         </dependency>
         <dependency>
             <groupId>io.helidon.microprofile.bundles</groupId>