package/vim: bump to v8.2.0

package/vim: bump to v8.2.0

Update from version 8.1.1929 to 8.2.0, which is the latest stable
version. The license file ('README.txt') has only one modification,
concerning Vim's version, as it is shown by the following diff:

   --- vim-8.1.1929/README.txt	2019-08-25 23:08:17.000000000 +0200
   +++ vim-8.2.0000/README.txt	2019-12-12 14:18:35.000000000 +0100
   @@ -1,4 +1,4 @@
   -README.txt for version 8.1 of Vim: Vi IMproved.
   +README.txt for version 8.2 of Vim: Vi IMproved.

Signed-off-by: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>