FORUM-020 v2 - Amend Code Signing Certificate Working Group Charter

[XolphinMartijn]

This ballot proposes to amend the Code Signing Certificate Working Group (CSCWG) Charter with the following changes:

• Bump the Charter version.
• Add a limited scope for timestamp certificates.
• Remove the version reference of the bylaws that we follow.
• During a ballot, count only members that are in a voting class, disregarding associate members and interested parties.
• Align Quorum definition as half the average, as the Bylaws have it set.