OAK-11598: bump testcontainers to v1.20.6 (#2176)

Author: fabriziofortino

oak-parent/pom.xml

@@ -66,7 +66,7 @@
     <tika.version>1.28.5</tika.version>
     <derby.version>10.15.2.0</derby.version>
     <jackson.version>2.17.2</jackson.version>
-    <testcontainers.version>1.20.3</testcontainers.version>
+    <testcontainers.version>1.20.6</testcontainers.version>
     <pax-exam.version>4.13.1</pax-exam.version>
     <groovy.version>3.0.22</groovy.version>
     <netty.version>4.1.115.Final</netty.version>