FTagAnalysisAlgorithms: Fix discovery of unit tests.
Need to specify a pattern for unit test discovery --- the default won't match anything. Fixes a failure seen with python 3.12, where unittest will fail if it doesn't find any tests.
Need to specify a pattern for unit test discovery --- the default won't match anything. Fixes a failure seen with python 3.12, where unittest will fail if it doesn't find any tests.