Bump r2dbc-postgresql from 0.8.1.RELEASE to 0.8.2.RELEASE in /m… (testcontainers#2561)

Bumps [r2dbc-postgresql](https://github.com/r2dbc/r2dbc-postgresql) from 0.8.1.RELEASE to 0.8.2.RELEASE.
- [Release notes](https://github.com/r2dbc/r2dbc-postgresql/releases)
- [Changelog](https://github.com/r2dbc/r2dbc-postgresql/blob/v0.8.2.RELEASE/CHANGELOG)
- [Commits](pgjdbc/r2dbc-postgresql@v0.8.1.RELEASE...v0.8.2.RELEASE)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

modules/postgresql/build.gradle

@@ -6,7 +6,7 @@ dependencies {
 
     compile project(':jdbc')
     compileOnly project(':r2dbc')
-    compileOnly 'io.r2dbc:r2dbc-postgresql:0.8.1.RELEASE'
+    compileOnly 'io.r2dbc:r2dbc-postgresql:0.8.2.RELEASE'
 
     testCompile 'org.postgresql:postgresql:42.2.12'
     testCompile 'commons-dbutils:commons-dbutils:1.7'