build(deps): bump org.postgresql:postgresql from 42.7.5 to 42.7.6

Bumps [org.postgresql:postgresql](https://github.com/pgjdbc/pgjdbc) from 42.7.5 to 42.7.6.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](pgjdbc/pgjdbc@REL42.7.5...REL42.7.6)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-version: 42.7.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

build.gradle

@@ -26,7 +26,7 @@ repositories {
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-    implementation 'org.postgresql:postgresql:42.7.5'
+    implementation 'org.postgresql:postgresql:42.7.6'
 //    implementation 'org.flywaydb:flyway-core:10.20.1'
     implementation 'org.flywaydb:flyway-database-postgresql:11.8.2'
     testImplementation 'org.testcontainers:postgresql:1.21.0'