Bump r2dbc-mariadb from 1.0.0 to 1.0.1 in /modules/mariadb

Bumps [r2dbc-mariadb](https://github.com/mariadb-corporation/mariadb-connector-r2dbc) from 1.0.0 to 1.0.1.
- [Release notes](https://github.com/mariadb-corporation/mariadb-connector-r2dbc/releases)
- [Changelog](https://github.com/mariadb-corporation/mariadb-connector-r2dbc/blob/master/CHANGELOG.md)
- [Commits](mariadb-corporation/mariadb-connector-r2dbc@1.0.0...1.0.1)

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

Author: dependabot[bot]

modules/mariadb/build.gradle

@@ -7,7 +7,7 @@ dependencies {
     compile project(':jdbc')
 
     compileOnly project(':r2dbc')
-    compileOnly 'org.mariadb:r2dbc-mariadb:1.0.0'
+    compileOnly 'org.mariadb:r2dbc-mariadb:1.0.1'
 
     testCompile project(':jdbc-test')
     testCompile 'org.mariadb.jdbc:mariadb-java-client:2.7.0'