fix(deps): update dependency software.amazon.awssdk:bom to v2.42.8 (#582)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

embedding-stores/langchain4j-community-s3-vectors/pom.xml

@@ -17,7 +17,7 @@
             The s3vectors artifact was introduced in SDK 2.41.0 (May 2025).
             Parent POM uses an older version that doesn't include this artifact.
         -->
-        <aws.sdk.version>2.42.0</aws.sdk.version>
+        <aws.sdk.version>2.42.8</aws.sdk.version>
     </properties>
 
     <dependencyManagement>