Bump base version to 1.6.0a0 (#35495)
Summary:
Since we've done the branch cut for 1.5.0 we should bump nightlies to 1.6.0
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35495
Differential Revision: D20697043
Pulled By: seemethere
fbshipit-source-id: 3646187a5e729994138bf2c68625f25f11430b3a
