Release Note: Update XML Security for Java to 3.0.2

The XML Signature implementation has been updated to Santuario 3.0.2. The main, new feature is support for EdDSA. One difference is that the JDK still supports the [`here()` function](https://www.w3.org/TR/xmldsig-core1/#function-here) by default. However, we recommend avoiding the use of the `here()` function in new signatures and replacing existing signatures that use the `here()` function. Future versions of the JDK will likely disable, and eventually remove, support for this function, as it cannot be supported using the standard Java XPath API. Users can now disable the `here()` function by setting the security property `jdk.xml.dsig.hereFunctionSupported` to "false".