* Add Thunderbird 68.8.0 * Update 68.8.0.yaml * Update 68.8.0.yaml * Updated SHA-256 Hash for x64 Exe * Update 68.8.0.yaml * Update 68.8.0.yaml * Update 68.8.0.yaml * Update 68.8.0.yaml Made a slight change to enable silent install Co-authored-by: Florian Kaiser <37000563+florian-ka@users.noreply.github.com> Co-authored-by: Kevin Larkin (MS) <kevinla@microsoft.com>