Fix CIFuzz artifact upload (#16802)
Fix CIFuzz artifact upload (#16802)

The CI fuzz artifacts upload will now work as expected. The artifacts produced
by oss-fuzz were (partially) chmodded 600 and owned by root, so an explicit
chmod step has been added to the cifuzz workflow.
gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport