[Pkg-privacy-maintainers] mat2 and pdf-redact-tools packaging

[Antoine Beaupré]

At their request, I have added @georg-guest, @loic and @mejo to the
newly created `mat2` and `pdf-redact-tools` project:

https://salsa.debian.org/pkg-privacy-team/mat2/
https://salsa.debian.org/pkg-privacy-team/pdf-redact-tools/

I don't quite know our policies are regarding external members
inclusions, but I figured:

 1. the more the merrier
 2. i know those folks online and would love them to help us

A.

-- 
Being cynical is the only way to deal with modern civilization — you
can't just swallow it whole.
                        - Frank Zappa