Add oss-rebuild to "Tools to make builds reproducible (by removing nondeterminism)"

[Chris Lamb]

Hi Aman,

> I would like to add a tool under "Tools to make builds reproducible (by 
> removing nondeterminism)" on this page 
> <https://reproducible-builds.org/tools/>.

Thanks for filing the merge request for this. I've pushed it about an
hour ago now and the change should be visible on our website. :)


Best wishes,

-- 
      o
    ⬋   ⬊      Chris Lamb
   o     o     reproducible-builds.org 💠
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