Update RELEASE.md and pom.xml prior to release (#34)

Signed-off-by: Spencer Wilson <[email protected]>

Author: SWilson4

RELEASE.md

@@ -1,4 +1,4 @@
-liboqs-java version 0.2.0
+liboqs-java version 0.3.0
 =========================
 
 About
@@ -16,3 +16,5 @@ Release notes
 The initial release of liboqs-java was released on July 8, 2020. Its release page on GitHub is https://github.com/open-quantum-safe/liboqs-java/releases/tag/0.1.0.
 
 Release 0.2.0 from January 2025 added support for Signature and Verify API's which accept a Context String.
+
+Release 0.3.0 from April 2025 added a KEM API for deterministically generating a keypair from a seed. This function is currently supported only for the ML-KEM algorithm.

pom.xml

@@ -6,7 +6,7 @@
     <groupId>org.openquantumsafe</groupId>
     <artifactId>liboqs-java</artifactId>
     <packaging>jar</packaging>
-    <version>2.0</version>
+    <version>3.0</version>
     <name>liboqs-java: Java wrapper for liboqs</name>
     <description>liboqs-java offers a Java wrapper providing quantum-resistant cryptographic algorithms via liboqs.</description>