pidgin/security

Add a donate link that opens https://imfreedom.org/donate/
release-2.x.y
2021-06-14, Gary Kramlich
13a246aa0656
Add a donate link that opens https://imfreedom.org/donate/

Testing Done:
Ran locally

Reviewed at https://reviews.imfreedom.org/r/749/
How to build Pidgin for Windows using MinGW
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For the latest build instructions, please refer to:
http://developer.pidgin.im/wiki/BuildingWinPidgin