Add ENF google lib to reuse dep5 file (EXPOSUREAPP-5542) (#2755)

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>
Co-authored-by: Mohamed <mohamed.metwalli@sap.com>

.reuse/dep5

@@ -42,4 +42,8 @@ License: Apache-2.0
 
 Files: gradlew gradlew.bat
 Copyright: Copyright 2015 the original author or authors.
+License: Apache-2.0
+
+Files: Corona-Warn-App/libs/play-services-nearby-exposurenotification-18.0.3.aar
+Copyright: Copyright 2020 Google LLC
 License: Apache-2.0
\ No newline at end of file