Bump postgresql from 42.2.12 to 42.4.1

Bumps [postgresql](https://github.com/pgjdbc/pgjdbc) from 42.2.12 to 42.4.1.
- [Release notes](https://github.com/pgjdbc/pgjdbc/releases)
- [Changelog](https://github.com/pgjdbc/pgjdbc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pgjdbc/pgjdbc/compare/REL42.2.12...REL42.4.1)

---
updated-dependencies:
- dependency-name: org.postgresql:postgresql
  dependency-type: direct:production
...

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

pom.xml

@@ -72,7 +72,7 @@
 		<dependency>
 			<groupId>org.postgresql</groupId>
 			<artifactId>postgresql</artifactId>
-			<version>42.2.12</version>
+			<version>42.4.1</version>
 		</dependency>
 		<dependency>
 			<groupId>org.liquibase</groupId>
@@ -82,7 +82,7 @@
 		<dependency>
 			<groupId>com.sendgrid</groupId>
 			<artifactId>sendgrid-java</artifactId>
-			<version>4.9.2</version>
+			<version>4.4.8</version>
 		</dependency>
 
 		<dependency>