dev-python/formencode: Revbump post dep changes

Signed-off-by: Michał Górny <mgorny@gentoo.org>

diff --git a/dev-python/formencode/formencode-1.3.0-r2.ebuild b/dev-python/formencode/formencode-1.3.0-r3.ebuild
similarity index 100%
rename from dev-python/formencode/formencode-1.3.0-r2.ebuild
rename to dev-python/formencode/formencode-1.3.0-r3.ebuild