Update dependencies

* AssertJ 3.15.0
* HikariCP 3.4.2
* JUnit 5.6.0
* Mockito 3.2.4
* Postgres JDBC 42.2.9
* Reactor Dysprosium SR4
* Spring JDBC 5.2.3

[#238]

Author: mp911de

pom.xml

@@ -32,23 +32,23 @@
     <url>https://github.com/r2dbc/r2dbc-postgresql</url>
 
     <properties>
-        <assertj.version>3.14.0</assertj.version>
-        <hikari-cp.version>3.4.0</hikari-cp.version>
+        <assertj.version>3.15.0</assertj.version>
+        <hikari-cp.version>3.4.2</hikari-cp.version>
         <java.version>1.8</java.version>
         <jsr305.version>3.0.2</jsr305.version>
-        <junit.version>5.5.2</junit.version>
-        <jmh.version>1.22</jmh.version>
+        <junit.version>5.6.0</junit.version>
+        <jmh.version>1.23</jmh.version>
         <mbr.version>0.2.0.RELEASE</mbr.version>
         <logback.version>1.2.3</logback.version>
-        <mockito.version>3.1.0</mockito.version>
-        <netty.version>4.1.43.Final</netty.version>
-        <postgresql.version>42.2.8</postgresql.version>
+        <mockito.version>3.2.4</mockito.version>
+        <netty.version>4.1.44.Final</netty.version>
+        <postgresql.version>42.2.9</postgresql.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <r2dbc-spi.version>0.8.0.RELEASE</r2dbc-spi.version>
-        <reactor.version>Dysprosium-SR2</reactor.version>
+        <reactor.version>Dysprosium-SR4</reactor.version>
         <scram-client.version>2.1</scram-client.version>
-        <spring-framework.version>5.2.1.RELEASE</spring-framework.version>
+        <spring-framework.version>5.2.3.RELEASE</spring-framework.version>
         <testcontainers.version>1.12.5</testcontainers.version>
     </properties>