fix(deps): update dependency org.postgresql:postgresql to v42.7.6 (#218)

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

Author: renovate[bot]

embedding-stores/langchain4j-community-alloydb-pg/pom.xml

@@ -34,7 +34,7 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>42.7.5</version>
+            <version>42.7.6</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.checkerframework</groupId>