Fix build issue with newer JDK versions

[mkienow-r7]

Description

Fixes a build issue with RecogMatchersProvider and newer JDK versions.

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /recog-java/src/main/java/com/rapid7/recog/provider/RecogMatchersProvider.java:[89,39] reference to newFileSystem is ambiguous
  both method newFileSystem(java.nio.file.Path,java.lang.ClassLoader) in java.nio.file.FileSystems and method newFileSystem(java.nio.file.Path,java.util.Map<java.lang.String,?>) in java.nio.file.FileSystems match
[INFO] 1 error

Motivation and Context

Fixing bugs and working with newer JDKs!

How Has This Been Tested?

Tested build (mvn compile) using both openjdk 11.0.11 and 16.0.1.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have updated the documentation accordingly (or changes are not required).
• I have added tests to cover my changes (or new tests are not required).
• All new and existing tests passed.