Update dependency org.postgresql:postgresql to v42.7.6

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

Author: renovate[bot]

build.gradle

@@ -59,7 +59,7 @@ subprojects {
         mockitoVersion = '5.4.0'
         openlineageVersion = '1.23.0'
         slf4jVersion = '1.7.36'
-        postgresqlVersion = '42.7.4'
+        postgresqlVersion = '42.7.6'
     }
 
     dependencies {