Add PGPv6MessageDecryptionTest to RegressionTests

Author: vanitasvitae

pg/src/test/java/org/bouncycastle/openpgp/test/RegressionTest.java

@@ -74,6 +74,8 @@ public class RegressionTest
         new LegacyX25519KeyPairTest(),
         new LegacyX448KeyPairTest(),
 
+        new PGPv6MessageDecryptionTest(),
+
         new Curve25519PrivateKeyEncodingTest(),
         new EdDSAKeyConversionWithLeadingZeroTest(),
         new ECDSAKeyPairTest()