Update Guice

[Captain-P-Goldfish]

When creating a xades signature we are getting the following warning in the log:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.ReflectUtils$2 (file:/D:/maven-repository/com/google/inject/guice/2.0/guice-2.0.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.ReflectUtils$2
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Updating the responsible dependencies in the dependencyManagement might work without problems, but it would be cleaner if xades4j would use a clean set of dependency versions

            <dependency>
                <groupId>com.google.inject.extensions</groupId>
                <artifactId>guice-multibindings</artifactId>
                <version>4.2.3</version>
            </dependency>
            <dependency>
                <groupId>com.google.inject</groupId>
                <artifactId>guice</artifactId>
                <version>5.0.1</version>
            </dependency>

[luisgoncalves]

I wasn't sure this would be a drop-in replacement, but looks like it is. I've updated it and did some additional cleanup.