Default encoding should be UTF-8

[elharo]

From the SpotBugs mojo

    /**
     * The file encoding to use when creating the HTML reports. If the property <code>project.reporting.outputEncoding</code>
     * is not set, the platform default encoding is used.
     *
     * @since 2.2
     */
    @Parameter(defaultValue = '${project.reporting.outputEncoding}', property = 'outputEncoding')
    String outputEncoding

In 2024 platform default encoding is almost never a good idea. The default should be UTF-8. On Mac OS X or in JDK 21, the default encoding is likely to be UTF-8 anyway.

https://openjdk.org/jeps/400

[hazendaz]

Actually it probably is internally UTF_8 everywhere it not supplied because that is all I've used in more than a decade at this point. I'll review as it may just be that the javadoc is entirely wrong now.