doc: Added release notes for 6.8.0
## Version 6.8.0
### New features
* Added support for Conan projects that have the Conan revisions feature enabled.
+* (IDETECT-2254) Added support for additional Yarn lock formats.
+* (IDETECT-2294) Resolved an issue where Git credentials could be logged when reading the remote url.
+* (IDETECT-2227) Resolved an issue where Nuget Inspectors would parse source files for assembly version.
### Resolved issues
* (IDETECT-2216) Resolved an issue that prevented non-ASCII filenames from being correctly transmitted to Black Duck during a binary scan file upload.
