pidgin/pidgin

Bump the version and update ChangeLog for the 2.14.7 release
release-2.x.y v2.14.7
2021-09-16, Gary Kramlich
f7894672b4e3
Bump the version and update ChangeLog for the 2.14.7 release

Testing Done:
Ran `make distcheck`

Reviewed at https://reviews.imfreedom.org/r/925/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/pidgin"
REPOSITORY_TYPE = "mercurial"
BRANCH = "release-2.x.y"
LAND_DEST_BRANCH = "release-2.x.y"
LAND_PUSH = False