Upgrade to testcontainers-java 1.21.0

Author: mrotteveel

CHANGES.md

@@ -1,6 +1,12 @@
 Version History
 ===============
 
+vNext
+-----
+- Updated org.testcontainers:jdbc to 1.21.0
+- Updated various test-dependencies
+- Updated Maven build plugins
+
 1.5.1
 -----
 - Added support for [firebirdsql/firebird](https://hub.docker.com/r/firebirdsql/firebird). \

pom.xml

@@ -37,7 +37,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
 
-        <testcontainers.version>1.20.4</testcontainers.version>
+        <testcontainers.version>1.21.0</testcontainers.version>
         <jaybird.version>5.0.7.java8</jaybird.version>
         <junit5.version>5.12.2</junit5.version>
     </properties>